/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 13:04:11,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 13:04:11,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 13:04:11,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 13:04:11,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 13:04:11,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 13:04:11,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 13:04:11,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 13:04:11,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 13:04:11,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 13:04:11,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 13:04:11,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 13:04:11,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 13:04:11,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 13:04:11,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 13:04:11,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 13:04:11,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 13:04:11,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 13:04:11,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 13:04:11,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 13:04:11,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 13:04:11,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 13:04:11,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 13:04:11,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 13:04:11,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 13:04:11,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 13:04:11,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 13:04:11,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 13:04:11,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 13:04:11,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 13:04:11,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 13:04:11,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 13:04:11,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 13:04:11,455 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 [2020-08-18 13:04:11,498 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 13:04:11,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 13:04:11,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 13:04:11,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 13:04:11,500 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 13:04:11,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 13:04:11,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 13:04:11,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 13:04:11,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 13:04:11,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 13:04:11,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 13:04:11,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 13:04:11,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 13:04:11,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 13:04:11,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 13:04:11,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 13:04:11,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 13:04:11,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 13:04:11,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 13:04:11,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 13:04:11,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 13:04:11,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 13:04:11,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 13:04:11,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 13:04:11,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 13:04:11,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 13:04:11,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 13:04:11,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 13:04:11,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 13:04:11,507 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=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 13:04:11,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 13:04:11,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 13:04:11,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 13:04:11,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 13:04:11,857 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 13:04:11,858 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-18 13:04:11,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdb69d20d/fb11fa83b6704fa2ab324eba42575604/FLAG1b929b7ef [2020-08-18 13:04:12,450 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 13:04:12,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-18 13:04:12,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdb69d20d/fb11fa83b6704fa2ab324eba42575604/FLAG1b929b7ef [2020-08-18 13:04:12,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdb69d20d/fb11fa83b6704fa2ab324eba42575604 [2020-08-18 13:04:12,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 13:04:12,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 13:04:12,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 13:04:12,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 13:04:12,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 13:04:12,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:04:12" (1/1) ... [2020-08-18 13:04:12,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e5903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:12, skipping insertion in model container [2020-08-18 13:04:12,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 01:04:12" (1/1) ... [2020-08-18 13:04:12,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 13:04:12,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 13:04:13,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:04:13,135 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 13:04:13,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 13:04:13,273 INFO L208 MainTranslator]: Completed translation [2020-08-18 13:04:13,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:13 WrapperNode [2020-08-18 13:04:13,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 13:04:13,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 13:04:13,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 13:04:13,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 13:04:13,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:13" (1/1) ... [2020-08-18 13:04:13,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:13" (1/1) ... [2020-08-18 13:04:13,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:13" (1/1) ... [2020-08-18 13:04:13,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:13" (1/1) ... [2020-08-18 13:04:13,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:13" (1/1) ... [2020-08-18 13:04:13,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:13" (1/1) ... [2020-08-18 13:04:13,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:13" (1/1) ... [2020-08-18 13:04:13,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 13:04:13,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 13:04:13,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 13:04:13,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 13:04:13,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:13" (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 [2020-08-18 13:04:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 13:04:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 13:04:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 13:04:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-08-18 13:04:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-08-18 13:04:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 13:04:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 13:04:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 13:04:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-08-18 13:04:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-08-18 13:04:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-08-18 13:04:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-08-18 13:04:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-08-18 13:04:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-08-18 13:04:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-08-18 13:04:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-08-18 13:04:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-18 13:04:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-08-18 13:04:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-18 13:04:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-08-18 13:04:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-08-18 13:04:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-18 13:04:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-08-18 13:04:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-08-18 13:04:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-08-18 13:04:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-08-18 13:04:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-08-18 13:04:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-08-18 13:04:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-08-18 13:04:13,390 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-08-18 13:04:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-08-18 13:04:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-08-18 13:04:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-08-18 13:04:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-08-18 13:04:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 13:04:13,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 13:04:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 13:04:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 13:04:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 13:04:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 13:04:13,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 13:04:13,777 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 13:04:13,777 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 13:04:13,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:04:13 BoogieIcfgContainer [2020-08-18 13:04:13,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 13:04:13,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 13:04:13,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 13:04:13,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 13:04:13,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 01:04:12" (1/3) ... [2020-08-18 13:04:13,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529fa23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:04:13, skipping insertion in model container [2020-08-18 13:04:13,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 01:04:13" (2/3) ... [2020-08-18 13:04:13,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529fa23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 01:04:13, skipping insertion in model container [2020-08-18 13:04:13,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 01:04:13" (3/3) ... [2020-08-18 13:04:13,790 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-18 13:04:13,801 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 13:04:13,808 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 13:04:13,821 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 13:04:13,841 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 13:04:13,841 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 13:04:13,841 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 13:04:13,842 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 13:04:13,842 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 13:04:13,842 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 13:04:13,842 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 13:04:13,842 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 13:04:13,860 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-18 13:04:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-18 13:04:13,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:13,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:04:13,868 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:13,875 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-08-18 13:04:13,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:13,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832935010] [2020-08-18 13:04:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:14,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 13:04:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:04:14,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832935010] [2020-08-18 13:04:14,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:04:14,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 13:04:14,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398878299] [2020-08-18 13:04:14,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 13:04:14,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:14,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 13:04:14,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 13:04:14,152 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-08-18 13:04:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:14,322 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-08-18 13:04:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 13:04:14,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-08-18 13:04:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:14,332 INFO L225 Difference]: With dead ends: 93 [2020-08-18 13:04:14,332 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 13:04:14,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 13:04:14,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 13:04:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 13:04:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 13:04:14,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-08-18 13:04:14,374 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-08-18 13:04:14,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:14,375 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-08-18 13:04:14,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 13:04:14,375 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-08-18 13:04:14,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 13:04:14,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:14,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:04:14,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 13:04:14,378 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:14,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:14,378 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-08-18 13:04:14,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:14,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444853572] [2020-08-18 13:04:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:14,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 13:04:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:04:14,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444853572] [2020-08-18 13:04:14,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:04:14,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 13:04:14,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409699860] [2020-08-18 13:04:14,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 13:04:14,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:14,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 13:04:14,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 13:04:14,470 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2020-08-18 13:04:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:14,597 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-08-18 13:04:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 13:04:14,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-08-18 13:04:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:14,599 INFO L225 Difference]: With dead ends: 78 [2020-08-18 13:04:14,600 INFO L226 Difference]: Without dead ends: 44 [2020-08-18 13:04:14,601 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 [2020-08-18 13:04:14,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-18 13:04:14,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-18 13:04:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-18 13:04:14,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-18 13:04:14,611 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-08-18 13:04:14,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:14,612 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-18 13:04:14,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 13:04:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-18 13:04:14,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 13:04:14,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:14,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:04:14,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 13:04:14,614 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:14,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:14,615 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-08-18 13:04:14,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:14,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717154601] [2020-08-18 13:04:14,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 13:04:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:04:14,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717154601] [2020-08-18 13:04:14,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:04:14,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 13:04:14,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869264610] [2020-08-18 13:04:14,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 13:04:14,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:14,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 13:04:14,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 13:04:14,856 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 8 states. [2020-08-18 13:04:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:15,213 INFO L93 Difference]: Finished difference Result 140 states and 187 transitions. [2020-08-18 13:04:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 13:04:15,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-08-18 13:04:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:15,219 INFO L225 Difference]: With dead ends: 140 [2020-08-18 13:04:15,219 INFO L226 Difference]: Without dead ends: 91 [2020-08-18 13:04:15,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-08-18 13:04:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-18 13:04:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-08-18 13:04:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-18 13:04:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-08-18 13:04:15,246 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 33 [2020-08-18 13:04:15,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:15,247 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-08-18 13:04:15,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 13:04:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-08-18 13:04:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 13:04:15,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:15,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:04:15,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 13:04:15,249 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:15,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:15,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1743223006, now seen corresponding path program 1 times [2020-08-18 13:04:15,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:15,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641640581] [2020-08-18 13:04:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:15,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:15,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 13:04:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:04:15,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641640581] [2020-08-18 13:04:15,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:04:15,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 13:04:15,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085026175] [2020-08-18 13:04:15,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 13:04:15,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:15,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 13:04:15,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-18 13:04:15,412 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 7 states. [2020-08-18 13:04:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:15,641 INFO L93 Difference]: Finished difference Result 136 states and 180 transitions. [2020-08-18 13:04:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 13:04:15,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-18 13:04:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:15,644 INFO L225 Difference]: With dead ends: 136 [2020-08-18 13:04:15,644 INFO L226 Difference]: Without dead ends: 92 [2020-08-18 13:04:15,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 13:04:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-18 13:04:15,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2020-08-18 13:04:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 13:04:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-08-18 13:04:15,657 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 33 [2020-08-18 13:04:15,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:15,658 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-08-18 13:04:15,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 13:04:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-08-18 13:04:15,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 13:04:15,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:15,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:04:15,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 13:04:15,660 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:15,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:15,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1042158428, now seen corresponding path program 1 times [2020-08-18 13:04:15,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:15,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57982920] [2020-08-18 13:04:15,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:15,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:15,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-18 13:04:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:04:15,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57982920] [2020-08-18 13:04:15,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:04:15,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 13:04:15,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599860950] [2020-08-18 13:04:15,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 13:04:15,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:15,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 13:04:15,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 13:04:15,747 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 6 states. [2020-08-18 13:04:15,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:15,929 INFO L93 Difference]: Finished difference Result 138 states and 179 transitions. [2020-08-18 13:04:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 13:04:15,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 13:04:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:15,931 INFO L225 Difference]: With dead ends: 138 [2020-08-18 13:04:15,931 INFO L226 Difference]: Without dead ends: 89 [2020-08-18 13:04:15,932 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 [2020-08-18 13:04:15,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-08-18 13:04:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-08-18 13:04:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-18 13:04:15,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-08-18 13:04:15,941 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 33 [2020-08-18 13:04:15,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:15,942 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-08-18 13:04:15,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 13:04:15,942 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-08-18 13:04:15,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-18 13:04:15,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:15,943 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] [2020-08-18 13:04:15,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 13:04:15,944 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:15,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:15,944 INFO L82 PathProgramCache]: Analyzing trace with hash -151257089, now seen corresponding path program 1 times [2020-08-18 13:04:15,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:15,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38214402] [2020-08-18 13:04:15,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:15,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:04:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:04:16,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38214402] [2020-08-18 13:04:16,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:04:16,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 13:04:16,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811360249] [2020-08-18 13:04:16,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 13:04:16,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:16,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 13:04:16,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 13:04:16,015 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 5 states. [2020-08-18 13:04:16,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:16,115 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2020-08-18 13:04:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 13:04:16,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-18 13:04:16,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:16,117 INFO L225 Difference]: With dead ends: 124 [2020-08-18 13:04:16,117 INFO L226 Difference]: Without dead ends: 89 [2020-08-18 13:04:16,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 13:04:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-08-18 13:04:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-08-18 13:04:16,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-08-18 13:04:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-08-18 13:04:16,140 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 35 [2020-08-18 13:04:16,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:16,141 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-08-18 13:04:16,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 13:04:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-08-18 13:04:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-18 13:04:16,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:16,145 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] [2020-08-18 13:04:16,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 13:04:16,146 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:16,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:16,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1172325443, now seen corresponding path program 1 times [2020-08-18 13:04:16,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:16,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60715571] [2020-08-18 13:04:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 13:04:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:04:16,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60715571] [2020-08-18 13:04:16,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:04:16,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 13:04:16,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278533585] [2020-08-18 13:04:16,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 13:04:16,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:16,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 13:04:16,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 13:04:16,251 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 7 states. [2020-08-18 13:04:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:16,425 INFO L93 Difference]: Finished difference Result 147 states and 187 transitions. [2020-08-18 13:04:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 13:04:16,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-08-18 13:04:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:16,426 INFO L225 Difference]: With dead ends: 147 [2020-08-18 13:04:16,426 INFO L226 Difference]: Without dead ends: 89 [2020-08-18 13:04:16,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-18 13:04:16,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-08-18 13:04:16,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-08-18 13:04:16,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-18 13:04:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-08-18 13:04:16,446 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 35 [2020-08-18 13:04:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:16,447 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-08-18 13:04:16,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 13:04:16,447 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-08-18 13:04:16,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 13:04:16,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:16,449 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:04:16,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 13:04:16,449 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:16,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:16,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1310821647, now seen corresponding path program 1 times [2020-08-18 13:04:16,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:16,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401682858] [2020-08-18 13:04:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 13:04:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 13:04:16,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401682858] [2020-08-18 13:04:16,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 13:04:16,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 13:04:16,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608412986] [2020-08-18 13:04:16,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 13:04:16,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:16,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 13:04:16,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 13:04:16,575 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 8 states. [2020-08-18 13:04:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:16,872 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2020-08-18 13:04:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 13:04:16,873 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-08-18 13:04:16,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:16,878 INFO L225 Difference]: With dead ends: 107 [2020-08-18 13:04:16,879 INFO L226 Difference]: Without dead ends: 105 [2020-08-18 13:04:16,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-08-18 13:04:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-18 13:04:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-08-18 13:04:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-18 13:04:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-08-18 13:04:16,895 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 38 [2020-08-18 13:04:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:16,898 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-08-18 13:04:16,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 13:04:16,898 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-08-18 13:04:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 13:04:16,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:16,903 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:04:16,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 13:04:16,903 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:16,904 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-08-18 13:04:16,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:16,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629250848] [2020-08-18 13:04:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 13:04:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:04:16,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629250848] [2020-08-18 13:04:16,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 13:04:16,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 13:04:16,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815774720] [2020-08-18 13:04:17,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 13:04:17,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:17,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 13:04:17,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 13:04:17,000 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand 8 states. [2020-08-18 13:04:17,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:17,182 INFO L93 Difference]: Finished difference Result 209 states and 263 transitions. [2020-08-18 13:04:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 13:04:17,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-18 13:04:17,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:17,186 INFO L225 Difference]: With dead ends: 209 [2020-08-18 13:04:17,186 INFO L226 Difference]: Without dead ends: 136 [2020-08-18 13:04:17,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 13:04:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-18 13:04:17,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 106. [2020-08-18 13:04:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-08-18 13:04:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2020-08-18 13:04:17,196 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 40 [2020-08-18 13:04:17,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:17,196 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2020-08-18 13:04:17,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 13:04:17,196 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2020-08-18 13:04:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-18 13:04:17,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:17,198 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:04:17,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 13:04:17,199 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:17,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:17,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-08-18 13:04:17,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:17,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861300433] [2020-08-18 13:04:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:17,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:17,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 13:04:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:04:17,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861300433] [2020-08-18 13:04:17,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 13:04:17,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 13:04:17,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158114276] [2020-08-18 13:04:17,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 13:04:17,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:17,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 13:04:17,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-18 13:04:17,333 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand 12 states. [2020-08-18 13:04:17,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:17,866 INFO L93 Difference]: Finished difference Result 240 states and 302 transitions. [2020-08-18 13:04:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 13:04:17,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-08-18 13:04:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:17,869 INFO L225 Difference]: With dead ends: 240 [2020-08-18 13:04:17,869 INFO L226 Difference]: Without dead ends: 189 [2020-08-18 13:04:17,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-08-18 13:04:17,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-18 13:04:17,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 127. [2020-08-18 13:04:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 13:04:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2020-08-18 13:04:17,881 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 45 [2020-08-18 13:04:17,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:17,882 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2020-08-18 13:04:17,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 13:04:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-08-18 13:04:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-18 13:04:17,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:17,884 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:04:17,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 13:04:17,884 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:17,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:17,885 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-08-18 13:04:17,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:17,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381806301] [2020-08-18 13:04:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:18,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 13:04:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:18,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 13:04:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 13:04:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 13:04:18,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381806301] [2020-08-18 13:04:18,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 13:04:18,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 13:04:18,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595532445] [2020-08-18 13:04:18,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 13:04:18,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 13:04:18,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 13:04:18,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 13:04:18,032 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand 11 states. [2020-08-18 13:04:18,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 13:04:18,398 INFO L93 Difference]: Finished difference Result 202 states and 254 transitions. [2020-08-18 13:04:18,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 13:04:18,399 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-08-18 13:04:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 13:04:18,401 INFO L225 Difference]: With dead ends: 202 [2020-08-18 13:04:18,401 INFO L226 Difference]: Without dead ends: 200 [2020-08-18 13:04:18,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-08-18 13:04:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-18 13:04:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 146. [2020-08-18 13:04:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-18 13:04:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2020-08-18 13:04:18,413 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 45 [2020-08-18 13:04:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 13:04:18,413 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2020-08-18 13:04:18,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 13:04:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2020-08-18 13:04:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-18 13:04:18,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 13:04:18,415 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 13:04:18,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 13:04:18,415 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 13:04:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 13:04:18,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-08-18 13:04:18,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 13:04:18,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212667062] [2020-08-18 13:04:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 13:04:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 13:04:18,433 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 13:04:18,433 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 13:04:18,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 13:04:18,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 01:04:18 BoogieIcfgContainer [2020-08-18 13:04:18,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 13:04:18,458 INFO L168 Benchmark]: Toolchain (without parser) took 5656.31 ms. Allocated memory was 140.0 MB in the beginning and 284.7 MB in the end (delta: 144.7 MB). Free memory was 102.1 MB in the beginning and 143.6 MB in the end (delta: -41.5 MB). Peak memory consumption was 103.2 MB. Max. memory is 7.1 GB. [2020-08-18 13:04:18,459 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 13:04:18,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 471.57 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 101.9 MB in the beginning and 178.6 MB in the end (delta: -76.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 13:04:18,461 INFO L168 Benchmark]: Boogie Preprocessor took 46.58 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 176.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-18 13:04:18,462 INFO L168 Benchmark]: RCFGBuilder took 460.52 ms. Allocated memory is still 201.3 MB. Free memory was 176.0 MB in the beginning and 148.5 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-08-18 13:04:18,462 INFO L168 Benchmark]: TraceAbstraction took 4673.21 ms. Allocated memory was 201.3 MB in the beginning and 284.7 MB in the end (delta: 83.4 MB). Free memory was 147.9 MB in the beginning and 143.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. [2020-08-18 13:04:18,466 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 471.57 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 101.9 MB in the beginning and 178.6 MB in the end (delta: -76.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.58 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 176.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.52 ms. Allocated memory is still 201.3 MB. Free memory was 176.0 MB in the beginning and 148.5 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4673.21 ms. Allocated memory was 201.3 MB in the beginning and 284.7 MB in the end (delta: 83.4 MB). Free memory was 147.9 MB in the beginning and 143.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] char A [2 + 2 + 4 +1]; [L75] A[2 + 2 + 4] = 0 [L76] CALL parse_expression_list (A) [L48] int start=0, i=-1, j=-1; [L49] char str2[2]; [L50] COND FALSE !(!str) [L52] i++ [L53] str[i] [L54] case 0: [L69] EXPR str[i] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: [L69] EXPR str[i] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L56] EXPR str[start] [L56] COND FALSE !(str[start] == '"') [L57] j = i-1 [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L58] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L59] (0 < j) && (str[j] == '"') [L59] EXPR str[j] [L59] (0 < j) && (str[j] == '"') [L59] COND FALSE !((0 < j) && (str[j] == '"')) [L60] COND TRUE start<=j [L61] CALL r_strncpy(str2, str+start, j-start+1) [L30] return strncpy(dest,src,n); [L61] RET r_strncpy(str2, str+start, j-start+1) [L62] CALL __VERIFIER_assert(j - start + 1 < 2) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 523 SDtfs, 901 SDslu, 1287 SDs, 0 SdLazy, 1834 SolverSat, 233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 209 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 388 ConstructedInterpolants, 0 QuantifiedInterpolants, 45573 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 2/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...