/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:59:23,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:59:23,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:59:23,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:59:23,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:59:23,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:59:23,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:59:23,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:59:23,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:59:23,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:59:23,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:59:23,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:59:23,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:59:23,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:59:23,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:59:23,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:59:23,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:59:23,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:59:23,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:59:23,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:59:23,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:59:23,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:59:23,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:59:23,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:59:23,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:59:23,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:59:23,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:59:23,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:59:23,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:59:23,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:59:23,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:59:23,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:59:23,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:59:23,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:59:23,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:59:23,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:59:23,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:59:23,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:59:23,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:59:23,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:59:23,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:59:23,898 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 [2020-10-27 01:59:23,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:59:23,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:59:23,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:59:23,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:59:23,961 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:59:23,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:59:23,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:59:23,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:59:23,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:59:23,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:59:23,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:59:23,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:59:23,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:59:23,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:59:23,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:59:23,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:59:23,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:59:23,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:59:23,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:59:23,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:59:23,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:59:23,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:59:23,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:59:23,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:59:23,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:59:23,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:59:23,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:59:23,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:59:23,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:59:23,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:59:24,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:59:24,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:59:24,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:59:24,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:59:24,492 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:59:24,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-27 01:59:24,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e08f4872b/9f54b130ba884d2da6287f26693f48b2/FLAG2510ef8ef [2020-10-27 01:59:25,393 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:59:25,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-27 01:59:25,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e08f4872b/9f54b130ba884d2da6287f26693f48b2/FLAG2510ef8ef [2020-10-27 01:59:25,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e08f4872b/9f54b130ba884d2da6287f26693f48b2 [2020-10-27 01:59:25,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:59:25,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:59:25,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:59:25,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:59:25,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:59:25,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:59:25" (1/1) ... [2020-10-27 01:59:25,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678c656f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:25, skipping insertion in model container [2020-10-27 01:59:25,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:59:25" (1/1) ... [2020-10-27 01:59:25,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:59:25,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:59:25,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:59:25,968 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:59:26,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:59:26,040 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:59:26,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:26 WrapperNode [2020-10-27 01:59:26,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:59:26,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:59:26,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:59:26,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:59:26,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:26" (1/1) ... [2020-10-27 01:59:26,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:26" (1/1) ... [2020-10-27 01:59:26,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:26" (1/1) ... [2020-10-27 01:59:26,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:26" (1/1) ... [2020-10-27 01:59:26,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:26" (1/1) ... [2020-10-27 01:59:26,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:26" (1/1) ... [2020-10-27 01:59:26,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:26" (1/1) ... [2020-10-27 01:59:26,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:59:26,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:59:26,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:59:26,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:59:26,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:26" (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 [2020-10-27 01:59:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:59:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:59:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:59:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:59:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-10-27 01:59:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-10-27 01:59:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:59:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:59:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:59:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:59:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:59:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:59:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:59:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:59:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-27 01:59:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-27 01:59:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-27 01:59:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-27 01:59:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-10-27 01:59:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-27 01:59:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-27 01:59:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-27 01:59:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-27 01:59:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-27 01:59:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-27 01:59:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-10-27 01:59:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-10-27 01:59:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-27 01:59:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-10-27 01:59:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-10-27 01:59:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-10-27 01:59:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-10-27 01:59:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-10-27 01:59:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-10-27 01:59:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-10-27 01:59:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-10-27 01:59:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-10-27 01:59:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-10-27 01:59:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-10-27 01:59:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-10-27 01:59:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:59:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:59:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:59:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:59:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:59:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:59:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:59:27,045 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:59:27,046 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 01:59:27,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:59:27 BoogieIcfgContainer [2020-10-27 01:59:27,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:59:27,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:59:27,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:59:27,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:59:27,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:59:25" (1/3) ... [2020-10-27 01:59:27,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4838f99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:59:27, skipping insertion in model container [2020-10-27 01:59:27,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:59:26" (2/3) ... [2020-10-27 01:59:27,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4838f99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:59:27, skipping insertion in model container [2020-10-27 01:59:27,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:59:27" (3/3) ... [2020-10-27 01:59:27,059 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-27 01:59:27,075 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:59:27,081 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:59:27,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:59:27,126 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:59:27,126 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:59:27,127 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:59:27,127 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:59:27,127 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:59:27,127 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:59:27,127 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:59:27,127 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:59:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-27 01:59:27,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 01:59:27,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:27,156 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] [2020-10-27 01:59:27,156 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:27,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:27,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1243057979, now seen corresponding path program 1 times [2020-10-27 01:59:27,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:27,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407764286] [2020-10-27 01:59:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:27,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:31,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:31,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 01:59:31,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:59:31,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3751 [2020-10-27 01:59:31,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:59:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:59:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:59:31,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:59:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:31,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:31,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:31,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:31,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:59:31,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:31,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:31,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:31,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:31,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:59:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 01:59:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:31,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:31,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:31,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:31,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:31,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:59:31,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:59:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:59:31,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407764286] [2020-10-27 01:59:31,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:31,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:59:31,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460266363] [2020-10-27 01:59:31,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:59:31,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:31,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:59:31,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:59:31,280 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 7 states. [2020-10-27 01:59:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:31,643 INFO L93 Difference]: Finished difference Result 146 states and 205 transitions. [2020-10-27 01:59:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:59:31,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-27 01:59:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:31,656 INFO L225 Difference]: With dead ends: 146 [2020-10-27 01:59:31,657 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 01:59:31,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:59:31,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 01:59:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2020-10-27 01:59:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 01:59:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-10-27 01:59:31,717 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 31 [2020-10-27 01:59:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:31,718 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-10-27 01:59:31,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:59:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-10-27 01:59:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 01:59:31,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:31,720 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] [2020-10-27 01:59:31,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:59:31,721 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:31,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1596271620, now seen corresponding path program 1 times [2020-10-27 01:59:31,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:31,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229308908] [2020-10-27 01:59:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:31,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:31,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:31,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:32,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:32,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:33,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:36,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:36,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:36,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 01:59:36,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 01:59:36,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 01:59:36,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:59:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:59:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:59:36,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:36,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:36,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:36,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:36,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:59:36,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:59:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 01:59:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:36,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:36,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:36,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:59:36,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:59:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:59:36,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229308908] [2020-10-27 01:59:36,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:36,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:59:36,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510984107] [2020-10-27 01:59:36,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:59:36,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:36,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:59:36,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:59:36,838 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand 7 states. [2020-10-27 01:59:37,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:37,200 INFO L93 Difference]: Finished difference Result 175 states and 235 transitions. [2020-10-27 01:59:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:59:37,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-27 01:59:37,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:37,204 INFO L225 Difference]: With dead ends: 175 [2020-10-27 01:59:37,204 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 01:59:37,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:59:37,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 01:59:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 93. [2020-10-27 01:59:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 01:59:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 123 transitions. [2020-10-27 01:59:37,224 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 123 transitions. Word has length 35 [2020-10-27 01:59:37,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:37,224 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 123 transitions. [2020-10-27 01:59:37,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:59:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 123 transitions. [2020-10-27 01:59:37,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 01:59:37,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:37,230 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] [2020-10-27 01:59:37,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:59:37,230 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:37,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1881047226, now seen corresponding path program 1 times [2020-10-27 01:59:37,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:37,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886682464] [2020-10-27 01:59:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:37,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:37,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:37,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:37,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:42,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:42,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 01:59:42,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:59:42,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 01:59:42,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:59:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:59:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:59:42,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 01:59:42,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:42,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:42,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:42,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:42,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:59:42,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:42,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 01:59:42,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 01:59:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:42,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:42,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:42,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:42,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:42,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:59:42,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:59:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:59:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:59:42,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886682464] [2020-10-27 01:59:42,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:42,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 01:59:42,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843298568] [2020-10-27 01:59:42,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:59:42,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:42,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:59:42,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:59:42,405 INFO L87 Difference]: Start difference. First operand 93 states and 123 transitions. Second operand 8 states. [2020-10-27 01:59:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:42,770 INFO L93 Difference]: Finished difference Result 178 states and 234 transitions. [2020-10-27 01:59:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:59:42,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-27 01:59:42,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:42,772 INFO L225 Difference]: With dead ends: 178 [2020-10-27 01:59:42,774 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 01:59:42,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:59:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 01:59:42,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2020-10-27 01:59:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 01:59:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2020-10-27 01:59:42,802 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 35 [2020-10-27 01:59:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:42,803 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2020-10-27 01:59:42,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:59:42,803 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2020-10-27 01:59:42,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 01:59:42,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:42,808 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] [2020-10-27 01:59:42,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:59:42,808 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:42,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:42,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1638717508, now seen corresponding path program 1 times [2020-10-27 01:59:42,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:42,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348747217] [2020-10-27 01:59:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:42,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:42,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:43,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:43,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:44,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:47,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:47,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 01:59:47,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 01:59:47,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:59:47,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:59:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:59:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 01:59:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:59:47,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:47,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:47,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:47,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:59:47,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:47,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 01:59:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:47,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:47,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:47,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:47,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:59:47,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:59:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 01:59:47,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348747217] [2020-10-27 01:59:47,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:47,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 01:59:47,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815822269] [2020-10-27 01:59:47,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:59:47,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:47,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:59:47,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:59:47,968 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 7 states. [2020-10-27 01:59:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:48,276 INFO L93 Difference]: Finished difference Result 153 states and 197 transitions. [2020-10-27 01:59:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:59:48,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-27 01:59:48,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:48,278 INFO L225 Difference]: With dead ends: 153 [2020-10-27 01:59:48,281 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 01:59:48,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:59:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 01:59:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 83. [2020-10-27 01:59:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 01:59:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 105 transitions. [2020-10-27 01:59:48,306 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 105 transitions. Word has length 40 [2020-10-27 01:59:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:48,307 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 105 transitions. [2020-10-27 01:59:48,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:59:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 105 transitions. [2020-10-27 01:59:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 01:59:48,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:48,311 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] [2020-10-27 01:59:48,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:59:48,312 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:48,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2069443774, now seen corresponding path program 1 times [2020-10-27 01:59:48,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:48,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945050702] [2020-10-27 01:59:48,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:48,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:49,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:49,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 01:59:49,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:59:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1548 [2020-10-27 01:59:49,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:59:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:59:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 01:59:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:49,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:50,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:50,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:59:50,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:50,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 01:59:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:50,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:50,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:50,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:50,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:59:50,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:59:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:59:50,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:59:50,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945050702] [2020-10-27 01:59:50,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:59:50,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:59:50,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231566225] [2020-10-27 01:59:50,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:59:50,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:50,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:59:50,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:59:50,023 INFO L87 Difference]: Start difference. First operand 83 states and 105 transitions. Second operand 9 states. [2020-10-27 01:59:50,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:50,638 INFO L93 Difference]: Finished difference Result 208 states and 278 transitions. [2020-10-27 01:59:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:59:50,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-27 01:59:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:50,642 INFO L225 Difference]: With dead ends: 208 [2020-10-27 01:59:50,643 INFO L226 Difference]: Without dead ends: 204 [2020-10-27 01:59:50,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-27 01:59:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-27 01:59:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 141. [2020-10-27 01:59:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-27 01:59:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 186 transitions. [2020-10-27 01:59:50,679 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 186 transitions. Word has length 40 [2020-10-27 01:59:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:50,680 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 186 transitions. [2020-10-27 01:59:50,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:59:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 186 transitions. [2020-10-27 01:59:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 01:59:50,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:50,687 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] [2020-10-27 01:59:50,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:59:50,688 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:50,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:50,688 INFO L82 PathProgramCache]: Analyzing trace with hash 785852092, now seen corresponding path program 2 times [2020-10-27 01:59:50,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:50,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536647621] [2020-10-27 01:59:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:50,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:50,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:50,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:50,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:50,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:53,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:53,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 01:59:53,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 01:59:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3162 [2020-10-27 01:59:53,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:59:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:59:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 01:59:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:53,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:53,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:53,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:53,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:59:53,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:53,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:53,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:53,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:59:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 01:59:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:53,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:53,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:53,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:53,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:59:53,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:59:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:53,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:59:53,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 01:59:54,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536647621] [2020-10-27 01:59:54,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:59:54,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 01:59:54,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932635777] [2020-10-27 01:59:54,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:59:54,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:54,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:59:54,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:59:54,010 INFO L87 Difference]: Start difference. First operand 141 states and 186 transitions. Second operand 8 states. [2020-10-27 01:59:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:54,363 INFO L93 Difference]: Finished difference Result 183 states and 238 transitions. [2020-10-27 01:59:54,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 01:59:54,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-27 01:59:54,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:54,367 INFO L225 Difference]: With dead ends: 183 [2020-10-27 01:59:54,368 INFO L226 Difference]: Without dead ends: 179 [2020-10-27 01:59:54,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-27 01:59:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-27 01:59:54,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 138. [2020-10-27 01:59:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-27 01:59:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 182 transitions. [2020-10-27 01:59:54,381 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 182 transitions. Word has length 45 [2020-10-27 01:59:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:54,381 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 182 transitions. [2020-10-27 01:59:54,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:59:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 182 transitions. [2020-10-27 01:59:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 01:59:54,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:54,384 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, 1, 1] [2020-10-27 01:59:54,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:59:54,384 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:54,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:54,385 INFO L82 PathProgramCache]: Analyzing trace with hash 213025463, now seen corresponding path program 1 times [2020-10-27 01:59:54,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:54,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282408714] [2020-10-27 01:59:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:54,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:54,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:54,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:56,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:57,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:59:57,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 01:59:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3546 [2020-10-27 01:59:57,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:59:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:59:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 01:59:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:58,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:58,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:58,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:58,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:58,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:58,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:59:58,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:58,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:59:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:58,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:58,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:58,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:58,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:58,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:59:58,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:59:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:59:58,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282408714] [2020-10-27 01:59:58,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:59:58,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:59:58,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760173059] [2020-10-27 01:59:58,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:59:58,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:58,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:59:58,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:59:58,073 INFO L87 Difference]: Start difference. First operand 138 states and 182 transitions. Second operand 9 states. [2020-10-27 01:59:58,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:59:58,699 INFO L93 Difference]: Finished difference Result 436 states and 601 transitions. [2020-10-27 01:59:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 01:59:58,701 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-27 01:59:58,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:59:58,705 INFO L225 Difference]: With dead ends: 436 [2020-10-27 01:59:58,706 INFO L226 Difference]: Without dead ends: 225 [2020-10-27 01:59:58,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:59:58,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-27 01:59:58,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 153. [2020-10-27 01:59:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-27 01:59:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 194 transitions. [2020-10-27 01:59:58,739 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 194 transitions. Word has length 47 [2020-10-27 01:59:58,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:59:58,740 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 194 transitions. [2020-10-27 01:59:58,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:59:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 194 transitions. [2020-10-27 01:59:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 01:59:58,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:59:58,743 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, 1, 1] [2020-10-27 01:59:58,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:59:58,744 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:59:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:59:58,748 INFO L82 PathProgramCache]: Analyzing trace with hash -373780551, now seen corresponding path program 1 times [2020-10-27 01:59:58,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:59:58,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594799297] [2020-10-27 01:59:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:59:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:58,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:58,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:59,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:59,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 01:59:59,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:59:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-27 01:59:59,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:59,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 01:59:59,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 01:59:59,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 01:59:59,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:59,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:59:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:59,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:59,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:59,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:59:59,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:59:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:59,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:59:59,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:59,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 01:59:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:59:59,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:59:59,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:59:59,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:59:59,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:59:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:59:59,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:59:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:59:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:59:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:59:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:59:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:59:59,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594799297] [2020-10-27 01:59:59,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:59:59,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 01:59:59,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26690225] [2020-10-27 01:59:59,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 01:59:59,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:59:59,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 01:59:59,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:59:59,564 INFO L87 Difference]: Start difference. First operand 153 states and 194 transitions. Second operand 10 states. [2020-10-27 02:00:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:00:00,180 INFO L93 Difference]: Finished difference Result 224 states and 282 transitions. [2020-10-27 02:00:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 02:00:00,180 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-27 02:00:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:00:00,184 INFO L225 Difference]: With dead ends: 224 [2020-10-27 02:00:00,185 INFO L226 Difference]: Without dead ends: 220 [2020-10-27 02:00:00,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-27 02:00:00,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-27 02:00:00,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 140. [2020-10-27 02:00:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-27 02:00:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 177 transitions. [2020-10-27 02:00:00,204 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 177 transitions. Word has length 47 [2020-10-27 02:00:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:00:00,205 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 177 transitions. [2020-10-27 02:00:00,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:00:00,205 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 177 transitions. [2020-10-27 02:00:00,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 02:00:00,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:00:00,207 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, 1, 1] [2020-10-27 02:00:00,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 02:00:00,207 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:00:00,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:00:00,208 INFO L82 PathProgramCache]: Analyzing trace with hash 431880181, now seen corresponding path program 1 times [2020-10-27 02:00:00,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:00:00,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209770131] [2020-10-27 02:00:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:00:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:00:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:00,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:01,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:00:01,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 02:00:01,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 02:00:01,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-10-27 02:00:01,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:00:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 02:00:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:00:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 02:00:01,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:00:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:00:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:00:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:01,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:00:01,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:00:01,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:00:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:00:01,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:00:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:00:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:00:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:00:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:00:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 02:00:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:00:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:01,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:00:01,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:00:01,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:00:01,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:00:01,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:00:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:00:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:00:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:00:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:00:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:00:01,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209770131] [2020-10-27 02:00:01,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 02:00:01,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 02:00:01,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640089002] [2020-10-27 02:00:01,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 02:00:01,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:00:01,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 02:00:01,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 02:00:01,424 INFO L87 Difference]: Start difference. First operand 140 states and 177 transitions. Second operand 11 states. [2020-10-27 02:00:01,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:00:01,987 INFO L93 Difference]: Finished difference Result 223 states and 284 transitions. [2020-10-27 02:00:01,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:00:01,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-27 02:00:01,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:00:01,993 INFO L225 Difference]: With dead ends: 223 [2020-10-27 02:00:01,993 INFO L226 Difference]: Without dead ends: 219 [2020-10-27 02:00:01,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-27 02:00:01,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-27 02:00:02,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 157. [2020-10-27 02:00:02,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-27 02:00:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2020-10-27 02:00:02,007 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 47 [2020-10-27 02:00:02,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:00:02,007 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2020-10-27 02:00:02,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 02:00:02,008 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2020-10-27 02:00:02,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 02:00:02,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:00:02,009 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, 1, 1] [2020-10-27 02:00:02,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 02:00:02,009 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:00:02,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:00:02,010 INFO L82 PathProgramCache]: Analyzing trace with hash -154925833, now seen corresponding path program 1 times [2020-10-27 02:00:02,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:00:02,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022483777] [2020-10-27 02:00:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:00:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:00:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:02,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:02,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:00:02,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 02:00:02,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:00:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 02:00:02,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:00:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:00:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 02:00:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:00:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:00:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:00:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:00:02,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:02,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:00:02,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:00:02,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:00:02,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:00:02,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:00:02,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:00:02,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:00:02,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:00:02,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:00:02,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 02:00:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:00:02,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:02,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:00:02,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:00:02,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:00:02,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:00:02,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:00:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:00:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 02:00:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:00:02,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:00:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 02:00:02,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022483777] [2020-10-27 02:00:02,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:00:02,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 02:00:02,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717565960] [2020-10-27 02:00:02,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 02:00:02,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:00:02,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 02:00:02,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 02:00:02,178 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand 4 states. [2020-10-27 02:00:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:00:02,315 INFO L93 Difference]: Finished difference Result 283 states and 372 transitions. [2020-10-27 02:00:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 02:00:02,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-27 02:00:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:00:02,317 INFO L225 Difference]: With dead ends: 283 [2020-10-27 02:00:02,317 INFO L226 Difference]: Without dead ends: 162 [2020-10-27 02:00:02,318 INFO L677 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 [2020-10-27 02:00:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-27 02:00:02,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-27 02:00:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-27 02:00:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 206 transitions. [2020-10-27 02:00:02,331 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 206 transitions. Word has length 47 [2020-10-27 02:00:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:00:02,331 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 206 transitions. [2020-10-27 02:00:02,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 02:00:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 206 transitions. [2020-10-27 02:00:02,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 02:00:02,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:00:02,333 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, 1, 1] [2020-10-27 02:00:02,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 02:00:02,333 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:00:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:00:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash -14377223, now seen corresponding path program 1 times [2020-10-27 02:00:02,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:00:02,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023891173] [2020-10-27 02:00:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:00:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:00:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:02,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:00:02,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 02:00:02,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:00:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 02:00:02,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:00:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:00:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 02:00:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:00:02,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:00:02,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:00:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:00:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:02,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:00:02,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:00:02,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:00:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:00:02,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:00:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:00:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:00:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:00:02,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:00:02,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 02:00:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:00:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:00:02,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:00:02,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:00:02,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:00:02,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:00:02,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:00:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:00:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 02:00:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:00:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:00:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 02:00:02,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023891173] [2020-10-27 02:00:02,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:00:02,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 02:00:02,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650572122] [2020-10-27 02:00:02,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 02:00:02,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:00:02,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 02:00:02,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 02:00:02,458 INFO L87 Difference]: Start difference. First operand 161 states and 206 transitions. Second operand 5 states. [2020-10-27 02:00:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:00:02,575 INFO L93 Difference]: Finished difference Result 260 states and 332 transitions. [2020-10-27 02:00:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 02:00:02,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-27 02:00:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:00:02,577 INFO L225 Difference]: With dead ends: 260 [2020-10-27 02:00:02,578 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 02:00:02,581 INFO L677 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 [2020-10-27 02:00:02,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 02:00:02,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-10-27 02:00:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 02:00:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 213 transitions. [2020-10-27 02:00:02,598 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 213 transitions. Word has length 47 [2020-10-27 02:00:02,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:00:02,600 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 213 transitions. [2020-10-27 02:00:02,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 02:00:02,600 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 213 transitions. [2020-10-27 02:00:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 02:00:02,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:00:02,601 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, 1, 1] [2020-10-27 02:00:02,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 02:00:02,601 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:00:02,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:00:02,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2008521929, now seen corresponding path program 1 times [2020-10-27 02:00:02,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:00:02,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310261796] [2020-10-27 02:00:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:00:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 02:00:02,621 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 02:00:02,621 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 02:00:02,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 02:00:02,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:00:02 BoogieIcfgContainer [2020-10-27 02:00:02,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 02:00:02,657 INFO L168 Benchmark]: Toolchain (without parser) took 36964.31 ms. Allocated memory was 165.7 MB in the beginning and 457.2 MB in the end (delta: 291.5 MB). Free memory was 140.8 MB in the beginning and 218.7 MB in the end (delta: -78.0 MB). Peak memory consumption was 214.8 MB. Max. memory is 8.0 GB. [2020-10-27 02:00:02,658 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 165.7 MB. Free memory is still 137.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 02:00:02,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.14 ms. Allocated memory is still 165.7 MB. Free memory was 140.1 MB in the beginning and 128.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 02:00:02,667 INFO L168 Benchmark]: Boogie Preprocessor took 57.01 ms. Allocated memory is still 165.7 MB. Free memory was 128.8 MB in the beginning and 126.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 02:00:02,667 INFO L168 Benchmark]: RCFGBuilder took 947.91 ms. Allocated memory is still 165.7 MB. Free memory was 126.7 MB in the beginning and 132.1 MB in the end (delta: -5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 02:00:02,669 INFO L168 Benchmark]: TraceAbstraction took 35604.57 ms. Allocated memory was 165.7 MB in the beginning and 457.2 MB in the end (delta: 291.5 MB). Free memory was 131.6 MB in the beginning and 218.7 MB in the end (delta: -87.2 MB). Peak memory consumption was 205.4 MB. Max. memory is 8.0 GB. [2020-10-27 02:00:02,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 165.7 MB. Free memory is still 137.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 343.14 ms. Allocated memory is still 165.7 MB. Free memory was 140.1 MB in the beginning and 128.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.01 ms. Allocated memory is still 165.7 MB. Free memory was 128.8 MB in the beginning and 126.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 947.91 ms. Allocated memory is still 165.7 MB. Free memory was 126.7 MB in the beginning and 132.1 MB in the end (delta: -5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 35604.57 ms. Allocated memory was 165.7 MB in the beginning and 457.2 MB in the end (delta: 291.5 MB). Free memory was 131.6 MB in the beginning and 218.7 MB in the end (delta: -87.2 MB). Peak memory consumption was 205.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 [L87] CALL parse_expression_list (A) [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; [L61] COND FALSE !(!str) [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L70] (0 < j) && (str[j] == '"') [L70] EXPR str[j] [L70] (0 < j) && (str[j] == '"') [L70] COND FALSE !((0 < j) && (str[j] == '"')) [L71] COND TRUE start<=j [L72] CALL r_strncpy(str2, str+start, j-start+1) [L41] return strncpy(dest,src,n); [L72] RET r_strncpy(str2, str+start, j-start+1) [L73] CALL __VERIFIER_assert(j - start + 1 < 2) [L14] COND TRUE !(cond) [L15] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "verisec_OpenSER_cases1_stripFullBoth_arr.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.5s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 520 SDtfs, 1213 SDslu, 1519 SDs, 0 SdLazy, 2180 SolverSat, 340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 398 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 30.1s InterpolantComputationTime, 508 NumberOfCodeBlocks, 508 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 61112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 29/58 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...