/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 [2020-10-28 15:19:17,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:19:17,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:19:17,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:19:17,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:19:17,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:19:17,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:19:17,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:19:17,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:19:17,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:19:17,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:19:17,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:19:17,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:19:17,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:19:17,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:19:17,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:19:17,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:19:17,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:19:17,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:19:17,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:19:17,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:19:17,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:19:17,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:19:17,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:19:17,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:19:17,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:19:17,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:19:17,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:19:17,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:19:17,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:19:17,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:19:17,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:19:17,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:19:17,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:19:17,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:19:17,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:19:17,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:19:17,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:19:17,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:19:17,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:19:17,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:19:17,253 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 [2020-10-28 15:19:17,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:19:17,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:19:17,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:19:17,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:19:17,302 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:19:17,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:19:17,303 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:19:17,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:19:17,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:19:17,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:19:17,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:19:17,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:19:17,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:19:17,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:19:17,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:19:17,305 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:19:17,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:19:17,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:19:17,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:19:17,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:19:17,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:19:17,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:19:17,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:19:17,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:19:17,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:19:17,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:19:17,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:19:17,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:19:17,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:19:17,308 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:19:17,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:19:17,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:19:17,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:19:17,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:19:17,773 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:19:17,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-28 15:19:17,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1fafb228/109f2ec568964b059df05de67ba8f1be/FLAGb302de980 [2020-10-28 15:19:18,482 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:19:18,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-28 15:19:18,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1fafb228/109f2ec568964b059df05de67ba8f1be/FLAGb302de980 [2020-10-28 15:19:18,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1fafb228/109f2ec568964b059df05de67ba8f1be [2020-10-28 15:19:18,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:19:18,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:19:18,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:19:18,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:19:18,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:19:18,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4a0fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18, skipping insertion in model container [2020-10-28 15:19:18,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:19:18,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:19:19,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:19:19,095 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:19:19,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:19:19,181 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:19:19,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:19 WrapperNode [2020-10-28 15:19:19,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:19:19,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:19:19,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:19:19,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:19:19,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:19" (1/1) ... [2020-10-28 15:19:19,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:19" (1/1) ... [2020-10-28 15:19:19,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:19" (1/1) ... [2020-10-28 15:19:19,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:19" (1/1) ... [2020-10-28 15:19:19,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:19" (1/1) ... [2020-10-28 15:19:19,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:19" (1/1) ... [2020-10-28 15:19:19,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:19" (1/1) ... [2020-10-28 15:19:19,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:19:19,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:19:19,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:19:19,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:19:19,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:19" (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 [2020-10-28 15:19:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:19:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:19:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:19:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:19:19,397 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-10-28 15:19:19,397 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-10-28 15:19:19,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:19:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:19:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:19:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 15:19:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 15:19:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:19:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:19:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:19:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-28 15:19:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-28 15:19:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-28 15:19:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-28 15:19:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-10-28 15:19:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-28 15:19:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-28 15:19:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-28 15:19:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-28 15:19:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-28 15:19:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-28 15:19:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-10-28 15:19:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-10-28 15:19:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-28 15:19:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-10-28 15:19:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-10-28 15:19:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-10-28 15:19:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-10-28 15:19:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-10-28 15:19:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-10-28 15:19:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-10-28 15:19:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-10-28 15:19:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-10-28 15:19:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-10-28 15:19:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-10-28 15:19:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-10-28 15:19:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:19:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:19:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:19:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:19:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:19:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:19:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:19:20,134 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:19:20,134 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 15:19:20,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:19:20 BoogieIcfgContainer [2020-10-28 15:19:20,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:19:20,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:19:20,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:19:20,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:19:20,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:19:18" (1/3) ... [2020-10-28 15:19:20,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aea9fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:19:20, skipping insertion in model container [2020-10-28 15:19:20,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:19" (2/3) ... [2020-10-28 15:19:20,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aea9fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:19:20, skipping insertion in model container [2020-10-28 15:19:20,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:19:20" (3/3) ... [2020-10-28 15:19:20,146 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-10-28 15:19:20,159 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:19:20,164 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:19:20,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:19:20,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:19:20,206 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:19:20,206 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:19:20,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:19:20,206 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:19:20,207 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:19:20,207 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:19:20,207 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:19:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-28 15:19:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 15:19:20,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:20,235 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] [2020-10-28 15:19:20,235 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1243057979, now seen corresponding path program 1 times [2020-10-28 15:19:20,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:20,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889988424] [2020-10-28 15:19:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:20,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:22,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:24,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:24,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 15:19:24,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:19:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3811 [2020-10-28 15:19:24,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:24,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 15:19:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:19:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:24,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:24,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:24,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:24,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:19:24,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:24,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:24,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:24,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:24,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:19:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:24,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:24,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:24,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:19:24,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:24,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:24,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:19:24,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:24,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889988424] [2020-10-28 15:19:24,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:19:24,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 15:19:24,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953384263] [2020-10-28 15:19:24,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 15:19:24,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:24,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 15:19:24,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:19:24,441 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-10-28 15:19:24,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:24,625 INFO L93 Difference]: Finished difference Result 100 states and 133 transitions. [2020-10-28 15:19:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 15:19:24,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-28 15:19:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:24,636 INFO L225 Difference]: With dead ends: 100 [2020-10-28 15:19:24,636 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 15:19:24,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:19:24,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 15:19:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-28 15:19:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 15:19:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-28 15:19:24,688 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 31 [2020-10-28 15:19:24,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:24,689 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-28 15:19:24,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 15:19:24,689 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-28 15:19:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 15:19:24,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:24,691 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] [2020-10-28 15:19:24,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:19:24,691 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:24,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1651644, now seen corresponding path program 1 times [2020-10-28 15:19:24,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:24,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051921420] [2020-10-28 15:19:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:24,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:25,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:25,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:25,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:26,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:29,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:29,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 15:19:29,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 15:19:29,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 15:19:29,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:29,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:29,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 15:19:29,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:19:29,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:29,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:29,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:29,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:29,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:29,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:29,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 15:19:29,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:29,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:29,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 15:19:29,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 15:19:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:29,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:29,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:29,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:29,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:19:29,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:29,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:19:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:29,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051921420] [2020-10-28 15:19:29,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:19:29,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 15:19:29,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177210480] [2020-10-28 15:19:29,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 15:19:29,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:29,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 15:19:29,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 15:19:29,834 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 4 states. [2020-10-28 15:19:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:30,068 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-10-28 15:19:30,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 15:19:30,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-28 15:19:30,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:30,073 INFO L225 Difference]: With dead ends: 82 [2020-10-28 15:19:30,074 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 15:19:30,077 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 [2020-10-28 15:19:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 15:19:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-28 15:19:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 15:19:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-28 15:19:30,102 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 35 [2020-10-28 15:19:30,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:30,104 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-28 15:19:30,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 15:19:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-28 15:19:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 15:19:30,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:30,106 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] [2020-10-28 15:19:30,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:19:30,107 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:30,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:30,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1803786690, now seen corresponding path program 1 times [2020-10-28 15:19:30,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:30,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362612456] [2020-10-28 15:19:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:30,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:31,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:31,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 15:19:35,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 15:19:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 15:19:35,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:35,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:19:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:19:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 15:19:35,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:35,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:35,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:35,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:35,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:35,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:19:35,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:35,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:35,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:35,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 15:19:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:35,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:35,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:35,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:19:35,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:35,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:35,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:35,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:19:35,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:35,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:35,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362612456] [2020-10-28 15:19:35,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:19:35,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:19:35,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716079992] [2020-10-28 15:19:35,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:19:35,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:35,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:19:35,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:19:35,306 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 7 states. [2020-10-28 15:19:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:35,773 INFO L93 Difference]: Finished difference Result 138 states and 180 transitions. [2020-10-28 15:19:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:19:35,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-28 15:19:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:35,777 INFO L225 Difference]: With dead ends: 138 [2020-10-28 15:19:35,777 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 15:19:35,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:19:35,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 15:19:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 56. [2020-10-28 15:19:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 15:19:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-28 15:19:35,792 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 35 [2020-10-28 15:19:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:35,793 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-28 15:19:35,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:19:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-28 15:19:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 15:19:35,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:35,795 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] [2020-10-28 15:19:35,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:19:35,795 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:35,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:35,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1673532156, now seen corresponding path program 1 times [2020-10-28 15:19:35,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:35,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896079277] [2020-10-28 15:19:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:35,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:36,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:37,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:37,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 15:19:37,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 15:19:37,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2033 [2020-10-28 15:19:37,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:37,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:37,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:19:37,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:19:37,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 15:19:37,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:37,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:37,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:37,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:37,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:19:37,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:37,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:37,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 15:19:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:37,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:37,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:37,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:19:37,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:37,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:19:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:37,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896079277] [2020-10-28 15:19:37,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:19:37,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:19:37,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168151835] [2020-10-28 15:19:37,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:19:37,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:37,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:19:37,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:19:37,954 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 7 states. [2020-10-28 15:19:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:38,280 INFO L93 Difference]: Finished difference Result 155 states and 197 transitions. [2020-10-28 15:19:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:19:38,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-28 15:19:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:38,283 INFO L225 Difference]: With dead ends: 155 [2020-10-28 15:19:38,283 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 15:19:38,284 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 [2020-10-28 15:19:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 15:19:38,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2020-10-28 15:19:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-28 15:19:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2020-10-28 15:19:38,297 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 35 [2020-10-28 15:19:38,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:38,298 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2020-10-28 15:19:38,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:19:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2020-10-28 15:19:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 15:19:38,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:38,300 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] [2020-10-28 15:19:38,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:19:38,300 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:38,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:38,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1086726142, now seen corresponding path program 1 times [2020-10-28 15:19:38,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:38,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83532521] [2020-10-28 15:19:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:38,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:38,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:38,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:39,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:39,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 15:19:39,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 15:19:39,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1410 [2020-10-28 15:19:39,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:39,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:39,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:19:39,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:19:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 15:19:39,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:39,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:39,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:39,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:39,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:39,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:39,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:19:39,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:39,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:39,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 15:19:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:39,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:39,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:39,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:39,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:19:39,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:39,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:19:39,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:39,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83532521] [2020-10-28 15:19:39,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:19:39,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:19:39,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997060241] [2020-10-28 15:19:39,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:19:39,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:39,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:19:39,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:19:39,851 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand 8 states. [2020-10-28 15:19:40,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:40,206 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2020-10-28 15:19:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:19:40,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-28 15:19:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:40,209 INFO L225 Difference]: With dead ends: 107 [2020-10-28 15:19:40,209 INFO L226 Difference]: Without dead ends: 103 [2020-10-28 15:19:40,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:19:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-28 15:19:40,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 92. [2020-10-28 15:19:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-28 15:19:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2020-10-28 15:19:40,222 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 35 [2020-10-28 15:19:40,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:40,223 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2020-10-28 15:19:40,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:19:40,223 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2020-10-28 15:19:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 15:19:40,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:40,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:19:40,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:19:40,226 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:40,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1809033399, now seen corresponding path program 1 times [2020-10-28 15:19:40,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:40,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94346187] [2020-10-28 15:19:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:40,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:40,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:43,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:43,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 15:19:43,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:19:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3037 [2020-10-28 15:19:43,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:43,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:19:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 15:19:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:19:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:43,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:43,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:43,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:19:43,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:43,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:43,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 15:19:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:43,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:43,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:43,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:43,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:19:43,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:43,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:19:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:43,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94346187] [2020-10-28 15:19:43,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:19:43,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:19:43,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10443671] [2020-10-28 15:19:43,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:19:43,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:43,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:19:43,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:19:43,380 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand 6 states. [2020-10-28 15:19:43,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:43,585 INFO L93 Difference]: Finished difference Result 153 states and 190 transitions. [2020-10-28 15:19:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:19:43,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-28 15:19:43,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:43,589 INFO L225 Difference]: With dead ends: 153 [2020-10-28 15:19:43,590 INFO L226 Difference]: Without dead ends: 106 [2020-10-28 15:19:43,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:19:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-28 15:19:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2020-10-28 15:19:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 15:19:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 122 transitions. [2020-10-28 15:19:43,619 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 122 transitions. Word has length 37 [2020-10-28 15:19:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:43,620 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 122 transitions. [2020-10-28 15:19:43,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:19:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 122 transitions. [2020-10-28 15:19:43,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 15:19:43,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:43,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:19:43,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 15:19:43,624 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:43,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:43,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1222227385, now seen corresponding path program 1 times [2020-10-28 15:19:43,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:43,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547964084] [2020-10-28 15:19:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:43,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:43,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:43,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:43,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:45,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:45,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 15:19:45,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 15:19:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1905 [2020-10-28 15:19:45,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:45,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:19:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:19:45,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:19:45,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:45,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:45,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:45,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:45,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:19:45,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:45,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:45,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:45,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:45,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:45,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:45,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 15:19:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:45,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:45,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:45,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:45,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:19:45,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:45,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:19:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:45,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:45,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547964084] [2020-10-28 15:19:45,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:19:45,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:19:45,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161094923] [2020-10-28 15:19:45,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:19:45,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:45,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:19:45,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:19:45,638 INFO L87 Difference]: Start difference. First operand 99 states and 122 transitions. Second operand 6 states. [2020-10-28 15:19:45,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:45,882 INFO L93 Difference]: Finished difference Result 194 states and 242 transitions. [2020-10-28 15:19:45,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:19:45,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-28 15:19:45,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:45,884 INFO L225 Difference]: With dead ends: 194 [2020-10-28 15:19:45,884 INFO L226 Difference]: Without dead ends: 97 [2020-10-28 15:19:45,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:19:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-28 15:19:45,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2020-10-28 15:19:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 15:19:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2020-10-28 15:19:45,894 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 37 [2020-10-28 15:19:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:45,894 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2020-10-28 15:19:45,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:19:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2020-10-28 15:19:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 15:19:45,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:45,896 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, 1, 1] [2020-10-28 15:19:45,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 15:19:45,896 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:45,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:45,897 INFO L82 PathProgramCache]: Analyzing trace with hash 642760509, now seen corresponding path program 1 times [2020-10-28 15:19:45,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:45,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037014087] [2020-10-28 15:19:45,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:45,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:45,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:46,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:50,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:50,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 15:19:50,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 15:19:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 15:19:50,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:50,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:19:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 15:19:50,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:19:50,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:50,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:50,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:50,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:50,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:19:50,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:50,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:51,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 15:19:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:51,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:51,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:51,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:51,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:19:51,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:51,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:19:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:51,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 15:19:51,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037014087] [2020-10-28 15:19:51,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:19:51,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:19:51,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370129350] [2020-10-28 15:19:51,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:19:51,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:51,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:19:51,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:19:51,013 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand 5 states. [2020-10-28 15:19:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:51,159 INFO L93 Difference]: Finished difference Result 134 states and 165 transitions. [2020-10-28 15:19:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:19:51,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-28 15:19:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:51,161 INFO L225 Difference]: With dead ends: 134 [2020-10-28 15:19:51,161 INFO L226 Difference]: Without dead ends: 87 [2020-10-28 15:19:51,162 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 [2020-10-28 15:19:51,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-28 15:19:51,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-28 15:19:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 15:19:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2020-10-28 15:19:51,170 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 42 [2020-10-28 15:19:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:51,170 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2020-10-28 15:19:51,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:19:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2020-10-28 15:19:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 15:19:51,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:51,171 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, 1, 1] [2020-10-28 15:19:51,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 15:19:51,172 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:51,174 INFO L82 PathProgramCache]: Analyzing trace with hash -764578183, now seen corresponding path program 1 times [2020-10-28 15:19:51,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:51,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80314620] [2020-10-28 15:19:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:51,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:52,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:52,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 15:19:52,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:19:52,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1242 [2020-10-28 15:19:52,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:52,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:19:52,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:19:52,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 15:19:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:52,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:52,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:52,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:52,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:19:52,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:52,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:52,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 15:19:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:52,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:52,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:52,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:52,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:52,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:19:52,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:52,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:19:52,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:52,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80314620] [2020-10-28 15:19:52,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:19:52,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 15:19:52,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944891617] [2020-10-28 15:19:52,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:19:52,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:52,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:19:52,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:19:52,557 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand 10 states. [2020-10-28 15:19:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:53,229 INFO L93 Difference]: Finished difference Result 310 states and 401 transitions. [2020-10-28 15:19:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:19:53,230 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-28 15:19:53,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:53,232 INFO L225 Difference]: With dead ends: 310 [2020-10-28 15:19:53,232 INFO L226 Difference]: Without dead ends: 156 [2020-10-28 15:19:53,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:19:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-28 15:19:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 107. [2020-10-28 15:19:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 15:19:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 127 transitions. [2020-10-28 15:19:53,245 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 127 transitions. Word has length 42 [2020-10-28 15:19:53,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:53,245 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 127 transitions. [2020-10-28 15:19:53,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:19:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 127 transitions. [2020-10-28 15:19:53,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 15:19:53,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:53,247 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, 1, 1] [2020-10-28 15:19:53,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 15:19:53,247 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:53,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:53,248 INFO L82 PathProgramCache]: Analyzing trace with hash -545723465, now seen corresponding path program 1 times [2020-10-28 15:19:53,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:53,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517254425] [2020-10-28 15:19:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:53,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:54,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:54,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 15:19:54,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 15:19:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1506 [2020-10-28 15:19:54,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:54,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:19:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:19:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 15:19:54,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:54,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:54,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:54,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:54,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:54,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:19:54,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:54,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 15:19:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:54,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:54,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:54,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:54,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:19:54,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:54,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:19:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:54,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517254425] [2020-10-28 15:19:54,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:19:54,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 15:19:54,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348971782] [2020-10-28 15:19:54,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:19:54,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:54,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:19:54,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:19:54,904 INFO L87 Difference]: Start difference. First operand 107 states and 127 transitions. Second operand 10 states. [2020-10-28 15:19:55,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:55,498 INFO L93 Difference]: Finished difference Result 243 states and 295 transitions. [2020-10-28 15:19:55,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:19:55,499 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-28 15:19:55,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:55,502 INFO L225 Difference]: With dead ends: 243 [2020-10-28 15:19:55,502 INFO L226 Difference]: Without dead ends: 153 [2020-10-28 15:19:55,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:19:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-28 15:19:55,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 107. [2020-10-28 15:19:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-28 15:19:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2020-10-28 15:19:55,513 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 42 [2020-10-28 15:19:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:55,513 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2020-10-28 15:19:55,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:19:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2020-10-28 15:19:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 15:19:55,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:55,515 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] [2020-10-28 15:19:55,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 15:19:55,515 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:55,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:55,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1640570633, now seen corresponding path program 2 times [2020-10-28 15:19:55,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:55,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023891173] [2020-10-28 15:19:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:55,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:55,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:55,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 15:19:55,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:19:55,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 15:19:55,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:55,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 15:19:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:19:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 15:19:55,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:55,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:55,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:55,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:55,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:19:55,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:55,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:55,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 15:19:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:55,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:55,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:55,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:55,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:55,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:19:55,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:55,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:55,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:55,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:19:55,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:55,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023891173] [2020-10-28 15:19:55,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:19:55,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 15:19:55,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619440810] [2020-10-28 15:19:55,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:19:55,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:55,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:19:55,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:19:55,887 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand 11 states. [2020-10-28 15:19:56,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:56,690 INFO L93 Difference]: Finished difference Result 403 states and 515 transitions. [2020-10-28 15:19:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:19:56,690 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-28 15:19:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:56,692 INFO L225 Difference]: With dead ends: 403 [2020-10-28 15:19:56,692 INFO L226 Difference]: Without dead ends: 225 [2020-10-28 15:19:56,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:19:56,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-28 15:19:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 128. [2020-10-28 15:19:56,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-28 15:19:56,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 157 transitions. [2020-10-28 15:19:56,703 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 157 transitions. Word has length 47 [2020-10-28 15:19:56,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:56,704 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 157 transitions. [2020-10-28 15:19:56,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:19:56,704 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 157 transitions. [2020-10-28 15:19:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 15:19:56,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:56,705 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] [2020-10-28 15:19:56,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 15:19:56,706 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:56,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:56,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1421715915, now seen corresponding path program 2 times [2020-10-28 15:19:56,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:56,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694600910] [2020-10-28 15:19:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:56,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:56,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 15:19:56,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 15:19:56,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:56,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:19:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:19:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 15:19:56,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:56,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:56,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:56,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:56,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:56,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:56,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:19:56,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:56,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:56,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:56,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:56,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:56,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:56,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 15:19:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:56,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:56,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:56,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:19:56,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:56,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:19:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:56,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694600910] [2020-10-28 15:19:56,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:19:56,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 15:19:56,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852743949] [2020-10-28 15:19:56,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:19:56,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:56,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:19:56,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:19:56,995 INFO L87 Difference]: Start difference. First operand 128 states and 157 transitions. Second operand 11 states. [2020-10-28 15:19:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:57,616 INFO L93 Difference]: Finished difference Result 231 states and 287 transitions. [2020-10-28 15:19:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:19:57,616 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-28 15:19:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:57,619 INFO L225 Difference]: With dead ends: 231 [2020-10-28 15:19:57,619 INFO L226 Difference]: Without dead ends: 227 [2020-10-28 15:19:57,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:19:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-28 15:19:57,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 160. [2020-10-28 15:19:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-28 15:19:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 205 transitions. [2020-10-28 15:19:57,633 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 205 transitions. Word has length 47 [2020-10-28 15:19:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:57,634 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 205 transitions. [2020-10-28 15:19:57,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:19:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 205 transitions. [2020-10-28 15:19:57,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 15:19:57,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:57,636 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] [2020-10-28 15:19:57,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 15:19:57,636 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:57,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:57,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2008521929, now seen corresponding path program 1 times [2020-10-28 15:19:57,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:57,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882961192] [2020-10-28 15:19:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 15:19:57,651 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 15:19:57,651 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 15:19:57,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 15:19:57,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:19:57 BoogieIcfgContainer [2020-10-28 15:19:57,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:19:57,680 INFO L168 Benchmark]: Toolchain (without parser) took 38825.97 ms. Allocated memory was 125.8 MB in the beginning and 357.6 MB in the end (delta: 231.7 MB). Free memory was 100.9 MB in the beginning and 178.0 MB in the end (delta: -77.1 MB). Peak memory consumption was 155.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:19:57,681 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:19:57,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.83 ms. Allocated memory is still 125.8 MB. Free memory was 100.2 MB in the beginning and 88.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:19:57,682 INFO L168 Benchmark]: Boogie Preprocessor took 104.90 ms. Allocated memory is still 125.8 MB. Free memory was 88.8 MB in the beginning and 86.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 15:19:57,683 INFO L168 Benchmark]: RCFGBuilder took 847.02 ms. Allocated memory was 125.8 MB in the beginning and 170.9 MB in the end (delta: 45.1 MB). Free memory was 86.7 MB in the beginning and 140.4 MB in the end (delta: -53.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:19:57,684 INFO L168 Benchmark]: TraceAbstraction took 37539.38 ms. Allocated memory was 170.9 MB in the beginning and 357.6 MB in the end (delta: 186.6 MB). Free memory was 140.0 MB in the beginning and 178.0 MB in the end (delta: -38.0 MB). Peak memory consumption was 149.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:19:57,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 323.83 ms. Allocated memory is still 125.8 MB. Free memory was 100.2 MB in the beginning and 88.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.90 ms. Allocated memory is still 125.8 MB. Free memory was 88.8 MB in the beginning and 86.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 847.02 ms. Allocated memory was 125.8 MB in the beginning and 170.9 MB in the end (delta: 45.1 MB). Free memory was 86.7 MB in the beginning and 140.4 MB in the end (delta: -53.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 37539.38 ms. Allocated memory was 170.9 MB in the beginning and 357.6 MB in the end (delta: 186.6 MB). Free memory was 140.0 MB in the beginning and 178.0 MB in the end (delta: -38.0 MB). Peak memory consumption was 149.5 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: 37.4s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 568 SDtfs, 1126 SDslu, 1416 SDs, 0 SdLazy, 2288 SolverSat, 328 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 319 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 512 NumberOfCodeBlocks, 512 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 453 ConstructedInterpolants, 0 QuantifiedInterpolants, 53705 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 2/24 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...