/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:43:34,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:43:34,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:43:34,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:43:34,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:43:34,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:43:34,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:43:34,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:43:34,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:43:34,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:43:34,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:43:34,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:43:34,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:43:34,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:43:34,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:43:34,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:43:34,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:43:34,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:43:34,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:43:34,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:43:34,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:43:34,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:43:34,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:43:34,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:43:34,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:43:34,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:43:34,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:43:34,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:43:34,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:43:34,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:43:34,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:43:34,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:43:34,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:43:34,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:43:34,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:43:34,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:43:34,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:43:34,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:43:34,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:43:34,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:43:34,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:43:34,356 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 [2020-08-22 00:43:34,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:43:34,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:43:34,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:43:34,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:43:34,380 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:43:34,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:43:34,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:43:34,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:43:34,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:43:34,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:43:34,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:43:34,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:43:34,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:43:34,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:43:34,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:43:34,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:43:34,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:43:34,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:43:34,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:43:34,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:43:34,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:43:34,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:43:34,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:43:34,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:43:34,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:43:34,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:43:34,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:43:34,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:43:34,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:43:34,385 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:43:34,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:43:34,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:43:34,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:43:34,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:43:34,749 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:43:34,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-08-22 00:43:34,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07920922b/db97b3e66f7342fa937c90605442f0da/FLAG3a091ae8d [2020-08-22 00:43:35,221 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:43:35,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-08-22 00:43:35,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07920922b/db97b3e66f7342fa937c90605442f0da/FLAG3a091ae8d [2020-08-22 00:43:35,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07920922b/db97b3e66f7342fa937c90605442f0da [2020-08-22 00:43:35,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:43:35,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:43:35,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:43:35,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:43:35,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:43:35,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:43:35" (1/1) ... [2020-08-22 00:43:35,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16661b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:35, skipping insertion in model container [2020-08-22 00:43:35,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:43:35" (1/1) ... [2020-08-22 00:43:35,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:43:35,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:43:35,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:43:35,934 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:43:36,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:43:36,103 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:43:36,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:36 WrapperNode [2020-08-22 00:43:36,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:43:36,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:43:36,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:43:36,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:43:36,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:36" (1/1) ... [2020-08-22 00:43:36,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:36" (1/1) ... [2020-08-22 00:43:36,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:36" (1/1) ... [2020-08-22 00:43:36,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:36" (1/1) ... [2020-08-22 00:43:36,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:36" (1/1) ... [2020-08-22 00:43:36,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:36" (1/1) ... [2020-08-22 00:43:36,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:36" (1/1) ... [2020-08-22 00:43:36,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:43:36,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:43:36,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:43:36,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:43:36,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:36" (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 [2020-08-22 00:43:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:43:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:43:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 00:43:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-08-22 00:43:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-08-22 00:43:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:43:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:43:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 00:43:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 00:43:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-08-22 00:43:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-08-22 00:43:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-08-22 00:43:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-08-22 00:43:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-08-22 00:43:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-08-22 00:43:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-08-22 00:43:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-08-22 00:43:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-22 00:43:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-08-22 00:43:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-22 00:43:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-08-22 00:43:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-08-22 00:43:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-22 00:43:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-08-22 00:43:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-08-22 00:43:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-08-22 00:43:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-08-22 00:43:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-08-22 00:43:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-08-22 00:43:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-08-22 00:43:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-08-22 00:43:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-08-22 00:43:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-08-22 00:43:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-08-22 00:43:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-08-22 00:43:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:43:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:43:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:43:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:43:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:43:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:43:36,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:43:36,695 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:43:36,696 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 00:43:36,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:43:36 BoogieIcfgContainer [2020-08-22 00:43:36,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:43:36,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:43:36,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:43:36,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:43:36,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:43:35" (1/3) ... [2020-08-22 00:43:36,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c841e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:43:36, skipping insertion in model container [2020-08-22 00:43:36,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:43:36" (2/3) ... [2020-08-22 00:43:36,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c841e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:43:36, skipping insertion in model container [2020-08-22 00:43:36,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:43:36" (3/3) ... [2020-08-22 00:43:36,709 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-08-22 00:43:36,719 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:43:36,726 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:43:36,740 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:43:36,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:43:36,767 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:43:36,767 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:43:36,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:43:36,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:43:36,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:43:36,769 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:43:36,769 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:43:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-08-22 00:43:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 00:43:36,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:36,799 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] [2020-08-22 00:43:36,800 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:36,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1663477819, now seen corresponding path program 1 times [2020-08-22 00:43:36,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:36,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548894196] [2020-08-22 00:43:36,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:37,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:37,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 00:43:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:37,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548894196] [2020-08-22 00:43:37,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:37,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:43:37,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637748454] [2020-08-22 00:43:37,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:43:37,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:37,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:43:37,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:43:37,073 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-08-22 00:43:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:37,329 INFO L93 Difference]: Finished difference Result 104 states and 142 transitions. [2020-08-22 00:43:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:43:37,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-08-22 00:43:37,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:37,342 INFO L225 Difference]: With dead ends: 104 [2020-08-22 00:43:37,343 INFO L226 Difference]: Without dead ends: 49 [2020-08-22 00:43:37,349 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 [2020-08-22 00:43:37,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-22 00:43:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-08-22 00:43:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 00:43:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-08-22 00:43:37,410 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 32 [2020-08-22 00:43:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:37,411 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-08-22 00:43:37,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:43:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-08-22 00:43:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 00:43:37,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:37,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:37,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:43:37,415 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:37,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:37,415 INFO L82 PathProgramCache]: Analyzing trace with hash 227833136, now seen corresponding path program 1 times [2020-08-22 00:43:37,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:37,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406070540] [2020-08-22 00:43:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:37,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 00:43:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:37,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406070540] [2020-08-22 00:43:37,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:37,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-22 00:43:37,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705326617] [2020-08-22 00:43:37,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:43:37,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:37,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:43:37,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:37,561 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 5 states. [2020-08-22 00:43:37,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:37,715 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2020-08-22 00:43:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:43:37,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-08-22 00:43:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:37,718 INFO L225 Difference]: With dead ends: 90 [2020-08-22 00:43:37,718 INFO L226 Difference]: Without dead ends: 51 [2020-08-22 00:43:37,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:43:37,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-22 00:43:37,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-08-22 00:43:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-22 00:43:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-08-22 00:43:37,728 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 38 [2020-08-22 00:43:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:37,729 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-08-22 00:43:37,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:43:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-08-22 00:43:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 00:43:37,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:37,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:37,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:43:37,732 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:37,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:37,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1109616718, now seen corresponding path program 2 times [2020-08-22 00:43:37,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:37,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324780123] [2020-08-22 00:43:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:37,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 00:43:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:37,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324780123] [2020-08-22 00:43:37,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:37,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 00:43:37,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911769931] [2020-08-22 00:43:37,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:37,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:37,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:37,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:37,834 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 6 states. [2020-08-22 00:43:37,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:37,963 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2020-08-22 00:43:37,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:43:37,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-22 00:43:37,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:37,965 INFO L225 Difference]: With dead ends: 92 [2020-08-22 00:43:37,965 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 00:43:37,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 00:43:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-08-22 00:43:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-22 00:43:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-08-22 00:43:37,974 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 40 [2020-08-22 00:43:37,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:37,975 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-08-22 00:43:37,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:37,975 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-08-22 00:43:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 00:43:37,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:37,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:37,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:43:37,977 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash 2091262388, now seen corresponding path program 3 times [2020-08-22 00:43:37,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:37,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815061644] [2020-08-22 00:43:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:43:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:38,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815061644] [2020-08-22 00:43:38,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:38,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 00:43:38,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141186366] [2020-08-22 00:43:38,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:43:38,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:38,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:43:38,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:43:38,065 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 7 states. [2020-08-22 00:43:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:38,212 INFO L93 Difference]: Finished difference Result 94 states and 114 transitions. [2020-08-22 00:43:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:38,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-08-22 00:43:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:38,214 INFO L225 Difference]: With dead ends: 94 [2020-08-22 00:43:38,214 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 00:43:38,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:43:38,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 00:43:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-08-22 00:43:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 00:43:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-08-22 00:43:38,231 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 42 [2020-08-22 00:43:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:38,231 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-08-22 00:43:38,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:43:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-08-22 00:43:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-22 00:43:38,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:38,235 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:38,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:43:38,235 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:38,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:38,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1355467978, now seen corresponding path program 4 times [2020-08-22 00:43:38,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:38,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786365630] [2020-08-22 00:43:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 00:43:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:38,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786365630] [2020-08-22 00:43:38,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:38,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 00:43:38,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159155598] [2020-08-22 00:43:38,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:43:38,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:38,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:43:38,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:43:38,406 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 8 states. [2020-08-22 00:43:38,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:38,529 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2020-08-22 00:43:38,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:43:38,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-08-22 00:43:38,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:38,531 INFO L225 Difference]: With dead ends: 96 [2020-08-22 00:43:38,531 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 00:43:38,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:43:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 00:43:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-08-22 00:43:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-22 00:43:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-08-22 00:43:38,544 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 44 [2020-08-22 00:43:38,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:38,546 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-08-22 00:43:38,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:43:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-08-22 00:43:38,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 00:43:38,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:38,551 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:38,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:43:38,551 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:38,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:38,552 INFO L82 PathProgramCache]: Analyzing trace with hash 2051402808, now seen corresponding path program 5 times [2020-08-22 00:43:38,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:38,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345339646] [2020-08-22 00:43:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:43:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:38,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345339646] [2020-08-22 00:43:38,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:38,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 00:43:38,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412342241] [2020-08-22 00:43:38,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:43:38,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:38,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:43:38,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:43:38,697 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 9 states. [2020-08-22 00:43:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:38,850 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2020-08-22 00:43:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:43:38,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-08-22 00:43:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:38,852 INFO L225 Difference]: With dead ends: 98 [2020-08-22 00:43:38,852 INFO L226 Difference]: Without dead ends: 59 [2020-08-22 00:43:38,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:43:38,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-08-22 00:43:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-08-22 00:43:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-22 00:43:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-08-22 00:43:38,860 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 46 [2020-08-22 00:43:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:38,860 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-08-22 00:43:38,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:43:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-08-22 00:43:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 00:43:38,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:38,861 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:38,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:43:38,862 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:38,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:38,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1005818694, now seen corresponding path program 6 times [2020-08-22 00:43:38,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:38,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193411568] [2020-08-22 00:43:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:43:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:38,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193411568] [2020-08-22 00:43:38,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:38,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:43:38,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545144455] [2020-08-22 00:43:38,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:43:38,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:38,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:43:38,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:43:38,957 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 10 states. [2020-08-22 00:43:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:39,113 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2020-08-22 00:43:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:43:39,114 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-08-22 00:43:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:39,115 INFO L225 Difference]: With dead ends: 100 [2020-08-22 00:43:39,115 INFO L226 Difference]: Without dead ends: 61 [2020-08-22 00:43:39,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:43:39,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-22 00:43:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-22 00:43:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-22 00:43:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-08-22 00:43:39,123 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 48 [2020-08-22 00:43:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:39,123 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-08-22 00:43:39,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:43:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-08-22 00:43:39,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 00:43:39,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:39,124 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:39,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:43:39,125 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:39,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1238051652, now seen corresponding path program 7 times [2020-08-22 00:43:39,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:39,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68457173] [2020-08-22 00:43:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:39,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:43:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:43:39,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68457173] [2020-08-22 00:43:39,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:43:39,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 00:43:39,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353141292] [2020-08-22 00:43:39,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 00:43:39,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:39,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 00:43:39,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:43:39,265 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 11 states. [2020-08-22 00:43:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:39,418 INFO L93 Difference]: Finished difference Result 101 states and 121 transitions. [2020-08-22 00:43:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:43:39,419 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-08-22 00:43:39,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:39,421 INFO L225 Difference]: With dead ends: 101 [2020-08-22 00:43:39,421 INFO L226 Difference]: Without dead ends: 62 [2020-08-22 00:43:39,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:43:39,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-22 00:43:39,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-08-22 00:43:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-22 00:43:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-08-22 00:43:39,431 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 50 [2020-08-22 00:43:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:39,432 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-08-22 00:43:39,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 00:43:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-08-22 00:43:39,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:43:39,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:39,433 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:39,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:43:39,434 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:39,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:39,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1075624898, now seen corresponding path program 8 times [2020-08-22 00:43:39,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:39,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735686801] [2020-08-22 00:43:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:39,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:39,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:43:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-08-22 00:43:39,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735686801] [2020-08-22 00:43:39,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:39,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:43:39,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675836936] [2020-08-22 00:43:39,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:43:39,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:39,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:43:39,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:43:39,492 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 4 states. [2020-08-22 00:43:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:39,567 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2020-08-22 00:43:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:43:39,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-08-22 00:43:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:39,568 INFO L225 Difference]: With dead ends: 98 [2020-08-22 00:43:39,568 INFO L226 Difference]: Without dead ends: 63 [2020-08-22 00:43:39,569 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 [2020-08-22 00:43:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-22 00:43:39,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-08-22 00:43:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-22 00:43:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-08-22 00:43:39,575 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 52 [2020-08-22 00:43:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:39,576 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-08-22 00:43:39,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:43:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-08-22 00:43:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:43:39,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:39,577 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:39,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:43:39,577 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:39,578 INFO L82 PathProgramCache]: Analyzing trace with hash -856770180, now seen corresponding path program 1 times [2020-08-22 00:43:39,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:39,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858017786] [2020-08-22 00:43:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:39,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:43:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-08-22 00:43:39,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858017786] [2020-08-22 00:43:39,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:39,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 00:43:39,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518459688] [2020-08-22 00:43:39,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:43:39,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:39,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:43:39,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:43:39,701 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 7 states. [2020-08-22 00:43:39,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:39,965 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2020-08-22 00:43:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:39,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-22 00:43:39,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:39,969 INFO L225 Difference]: With dead ends: 147 [2020-08-22 00:43:39,969 INFO L226 Difference]: Without dead ends: 94 [2020-08-22 00:43:39,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:43:39,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-22 00:43:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 70. [2020-08-22 00:43:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-22 00:43:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2020-08-22 00:43:39,981 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 52 [2020-08-22 00:43:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:39,982 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2020-08-22 00:43:39,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:43:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2020-08-22 00:43:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:43:39,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:39,983 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:39,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:43:39,983 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:39,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:39,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1749253374, now seen corresponding path program 1 times [2020-08-22 00:43:39,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:39,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416258557] [2020-08-22 00:43:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:40,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:40,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:43:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-08-22 00:43:40,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416258557] [2020-08-22 00:43:40,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:40,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:40,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048333343] [2020-08-22 00:43:40,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:40,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:40,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:40,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:40,057 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand 6 states. [2020-08-22 00:43:40,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:40,226 INFO L93 Difference]: Finished difference Result 132 states and 161 transitions. [2020-08-22 00:43:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:43:40,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-08-22 00:43:40,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:40,229 INFO L225 Difference]: With dead ends: 132 [2020-08-22 00:43:40,229 INFO L226 Difference]: Without dead ends: 81 [2020-08-22 00:43:40,229 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 [2020-08-22 00:43:40,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-22 00:43:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 65. [2020-08-22 00:43:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-08-22 00:43:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-08-22 00:43:40,236 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 52 [2020-08-22 00:43:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:40,236 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-08-22 00:43:40,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-08-22 00:43:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 00:43:40,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:40,239 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:40,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:43:40,239 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:40,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:40,240 INFO L82 PathProgramCache]: Analyzing trace with hash 694889275, now seen corresponding path program 1 times [2020-08-22 00:43:40,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:40,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916463399] [2020-08-22 00:43:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:40,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:40,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 00:43:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-08-22 00:43:40,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916463399] [2020-08-22 00:43:40,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:40,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 00:43:40,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386857337] [2020-08-22 00:43:40,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:43:40,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:40,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:43:40,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:43:40,366 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 7 states. [2020-08-22 00:43:40,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:40,665 INFO L93 Difference]: Finished difference Result 159 states and 204 transitions. [2020-08-22 00:43:40,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:43:40,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-08-22 00:43:40,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:40,668 INFO L225 Difference]: With dead ends: 159 [2020-08-22 00:43:40,668 INFO L226 Difference]: Without dead ends: 114 [2020-08-22 00:43:40,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:43:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-22 00:43:40,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87. [2020-08-22 00:43:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-22 00:43:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2020-08-22 00:43:40,683 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 57 [2020-08-22 00:43:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:40,684 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2020-08-22 00:43:40,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:43:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2020-08-22 00:43:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 00:43:40,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:40,686 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:40,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 00:43:40,686 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:40,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:40,687 INFO L82 PathProgramCache]: Analyzing trace with hash -994054467, now seen corresponding path program 1 times [2020-08-22 00:43:40,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:40,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617257440] [2020-08-22 00:43:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 00:43:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-08-22 00:43:40,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617257440] [2020-08-22 00:43:40,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:40,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:40,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017830633] [2020-08-22 00:43:40,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:40,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:40,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:40,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:40,785 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand 6 states. [2020-08-22 00:43:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:40,911 INFO L93 Difference]: Finished difference Result 151 states and 191 transitions. [2020-08-22 00:43:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:43:40,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-08-22 00:43:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:40,913 INFO L225 Difference]: With dead ends: 151 [2020-08-22 00:43:40,913 INFO L226 Difference]: Without dead ends: 115 [2020-08-22 00:43:40,913 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 [2020-08-22 00:43:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-22 00:43:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 95. [2020-08-22 00:43:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-22 00:43:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2020-08-22 00:43:40,924 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 57 [2020-08-22 00:43:40,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:40,925 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2020-08-22 00:43:40,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2020-08-22 00:43:40,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 00:43:40,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:43:40,930 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:43:40,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 00:43:40,930 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:43:40,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:43:40,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1580860481, now seen corresponding path program 1 times [2020-08-22 00:43:40,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:43:40,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96741695] [2020-08-22 00:43:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:43:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:43:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 00:43:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:43:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-08-22 00:43:41,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96741695] [2020-08-22 00:43:41,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:43:41,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:43:41,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667798111] [2020-08-22 00:43:41,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:43:41,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:43:41,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:43:41,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:43:41,015 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand 6 states. [2020-08-22 00:43:41,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:43:41,135 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2020-08-22 00:43:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:43:41,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-08-22 00:43:41,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:43:41,137 INFO L225 Difference]: With dead ends: 96 [2020-08-22 00:43:41,137 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:43:41,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:43:41,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:43:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:43:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:43:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:43:41,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-08-22 00:43:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:43:41,139 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:43:41,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:43:41,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:43:41,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:43:41,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 00:43:41,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:43:41,273 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-08-22 00:43:41,273 INFO L268 CegarLoopResult]: For program point L60-2(line 60) no Hoare annotation was computed. [2020-08-22 00:43:41,274 INFO L268 CegarLoopResult]: For program point L60-4(lines 54 72) no Hoare annotation was computed. [2020-08-22 00:43:41,274 INFO L268 CegarLoopResult]: For program point L56-1(line 56) no Hoare annotation was computed. [2020-08-22 00:43:41,274 INFO L268 CegarLoopResult]: For program point L56-3(line 56) no Hoare annotation was computed. [2020-08-22 00:43:41,274 INFO L271 CegarLoopResult]: At program point L56-5(line 56) the Hoare annotation is: true [2020-08-22 00:43:41,274 INFO L268 CegarLoopResult]: For program point L52-1(lines 52 73) no Hoare annotation was computed. [2020-08-22 00:43:41,275 INFO L268 CegarLoopResult]: For program point L56-6(line 56) no Hoare annotation was computed. [2020-08-22 00:43:41,275 INFO L268 CegarLoopResult]: For program point L52-2(lines 52 73) no Hoare annotation was computed. [2020-08-22 00:43:41,275 INFO L271 CegarLoopResult]: At program point L52-4(lines 52 73) the Hoare annotation is: true [2020-08-22 00:43:41,275 INFO L268 CegarLoopResult]: For program point L52-5(lines 52 73) no Hoare annotation was computed. [2020-08-22 00:43:41,275 INFO L264 CegarLoopResult]: At program point L65(line 65) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-08-22 00:43:41,276 INFO L268 CegarLoopResult]: For program point L65-1(line 65) no Hoare annotation was computed. [2020-08-22 00:43:41,276 INFO L268 CegarLoopResult]: For program point L61(lines 61 70) no Hoare annotation was computed. [2020-08-22 00:43:41,276 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-08-22 00:43:41,277 INFO L268 CegarLoopResult]: For program point L57-2(line 57) no Hoare annotation was computed. [2020-08-22 00:43:41,277 INFO L264 CegarLoopResult]: At program point L66(line 66) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-08-22 00:43:41,277 INFO L268 CegarLoopResult]: For program point L66-1(line 66) no Hoare annotation was computed. [2020-08-22 00:43:41,277 INFO L268 CegarLoopResult]: For program point parse_expression_listFINAL(lines 47 75) no Hoare annotation was computed. [2020-08-22 00:43:41,277 INFO L268 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-08-22 00:43:41,278 INFO L264 CegarLoopResult]: At program point parse_expression_listENTRY(lines 47 75) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-22 00:43:41,278 INFO L268 CegarLoopResult]: For program point L54(lines 54 72) no Hoare annotation was computed. [2020-08-22 00:43:41,278 INFO L268 CegarLoopResult]: For program point parse_expression_listEXIT(lines 47 75) no Hoare annotation was computed. [2020-08-22 00:43:41,279 INFO L268 CegarLoopResult]: For program point L59-1(line 59) no Hoare annotation was computed. [2020-08-22 00:43:41,279 INFO L268 CegarLoopResult]: For program point L59-2(line 59) no Hoare annotation was computed. [2020-08-22 00:43:41,279 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-08-22 00:43:41,279 INFO L268 CegarLoopResult]: For program point L59-4(line 59) no Hoare annotation was computed. [2020-08-22 00:43:41,279 INFO L268 CegarLoopResult]: For program point L59-6(line 59) no Hoare annotation was computed. [2020-08-22 00:43:41,279 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-08-22 00:43:41,279 INFO L271 CegarLoopResult]: At program point L59-8(line 59) the Hoare annotation is: true [2020-08-22 00:43:41,279 INFO L268 CegarLoopResult]: For program point L59-9(line 59) no Hoare annotation was computed. [2020-08-22 00:43:41,280 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 00:43:41,280 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-22 00:43:41,280 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:43:41,280 INFO L268 CegarLoopResult]: For program point r_strncpyFINAL(line 31) no Hoare annotation was computed. [2020-08-22 00:43:41,280 INFO L268 CegarLoopResult]: For program point r_strncpyEXIT(line 31) no Hoare annotation was computed. [2020-08-22 00:43:41,280 INFO L271 CegarLoopResult]: At program point r_strncpyENTRY(line 31) the Hoare annotation is: true [2020-08-22 00:43:41,280 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:43:41,281 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 00:43:41,281 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 00:43:41,281 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 00:43:41,281 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 76 85) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-22 00:43:41,281 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 76 85) no Hoare annotation was computed. [2020-08-22 00:43:41,281 INFO L271 CegarLoopResult]: At program point L83(line 83) the Hoare annotation is: true [2020-08-22 00:43:41,282 INFO L268 CegarLoopResult]: For program point L83-1(line 83) no Hoare annotation was computed. [2020-08-22 00:43:41,282 INFO L268 CegarLoopResult]: For program point L79-2(lines 79 81) no Hoare annotation was computed. [2020-08-22 00:43:41,282 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 76 85) no Hoare annotation was computed. [2020-08-22 00:43:41,282 INFO L271 CegarLoopResult]: At program point L79-3(lines 79 81) the Hoare annotation is: true [2020-08-22 00:43:41,282 INFO L268 CegarLoopResult]: For program point L79-4(lines 79 81) no Hoare annotation was computed. [2020-08-22 00:43:41,282 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-22 00:43:41,282 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-08-22 00:43:41,282 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-22 00:43:41,283 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-08-22 00:43:41,283 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-08-22 00:43:41,283 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-08-22 00:43:41,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:43:41 BoogieIcfgContainer [2020-08-22 00:43:41,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:43:41,302 INFO L168 Benchmark]: Toolchain (without parser) took 5649.22 ms. Allocated memory was 144.2 MB in the beginning and 295.7 MB in the end (delta: 151.5 MB). Free memory was 99.5 MB in the beginning and 168.9 MB in the end (delta: -69.5 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:41,303 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:43:41,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.20 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 99.1 MB in the beginning and 178.3 MB in the end (delta: -79.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:41,305 INFO L168 Benchmark]: Boogie Preprocessor took 98.48 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 175.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:41,315 INFO L168 Benchmark]: RCFGBuilder took 496.83 ms. Allocated memory is still 201.9 MB. Free memory was 175.1 MB in the beginning and 146.7 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:41,316 INFO L168 Benchmark]: TraceAbstraction took 4596.97 ms. Allocated memory was 201.9 MB in the beginning and 295.7 MB in the end (delta: 93.8 MB). Free memory was 146.0 MB in the beginning and 168.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. [2020-08-22 00:43:41,325 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 452.20 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 99.1 MB in the beginning and 178.3 MB in the end (delta: -79.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.48 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 175.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.83 ms. Allocated memory is still 201.9 MB. Free memory was 175.1 MB in the beginning and 146.7 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4596.97 ms. Allocated memory was 201.9 MB in the beginning and 295.7 MB in the end (delta: 93.8 MB). Free memory was 146.0 MB in the beginning and 168.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 79]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 14, TraceHistogramMax: 8, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 732 SDtfs, 388 SDslu, 1954 SDs, 0 SdLazy, 1655 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=13, 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, 14 MinimizatonAttempts, 94 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 88 PreInvPairs, 113 NumberOfFragments, 35 HoareAnnotationTreeSize, 88 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 667 NumberOfCodeBlocks, 667 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 653 ConstructedInterpolants, 0 QuantifiedInterpolants, 57554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 390/530 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 correct! Received shutdown request...