/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:48:53,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:48:53,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:48:53,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:48:53,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:48:53,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:48:53,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:48:53,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:48:53,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:48:53,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:48:53,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:48:53,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:48:53,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:48:53,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:48:53,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:48:53,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:48:53,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:48:53,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:48:53,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:48:53,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:48:53,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:48:53,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:48:53,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:48:53,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:48:53,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:48:53,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:48:53,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:48:53,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:48:53,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:48:53,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:48:53,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:48:53,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:48:53,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:48:53,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:48:53,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:48:53,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:48:53,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:48:53,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:48:53,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:48:53,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:48:53,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:48:53,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:48:53,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:48:53,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:48:53,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:48:53,391 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:48:53,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:48:53,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:48:53,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:48:53,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:48:53,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:48:53,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:48:53,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:48:53,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:48:53,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:48:53,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:48:53,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:48:53,395 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:48:53,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:48:53,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:48:53,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:48:53,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:48:53,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:48:53,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:48:53,397 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:48:53,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:48:53,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:48:53,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:48:53,838 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:48:53,839 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:48:53,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-02-23 18:48:53,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22249133/0919e0555c1d4629a19a4ac56ff04acc/FLAG29abff64a [2021-02-23 18:48:54,603 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:48:54,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-02-23 18:48:54,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22249133/0919e0555c1d4629a19a4ac56ff04acc/FLAG29abff64a [2021-02-23 18:48:54,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e22249133/0919e0555c1d4629a19a4ac56ff04acc [2021-02-23 18:48:54,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:48:54,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:48:55,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:48:55,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:48:55,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:48:55,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:48:54" (1/1) ... [2021-02-23 18:48:55,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e649d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55, skipping insertion in model container [2021-02-23 18:48:55,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:48:54" (1/1) ... [2021-02-23 18:48:55,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:48:55,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:48:55,247 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-02-23 18:48:55,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:48:55,297 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:48:55,312 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-02-23 18:48:55,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:48:55,384 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:48:55,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55 WrapperNode [2021-02-23 18:48:55,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:48:55,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:48:55,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:48:55,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:48:55,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55" (1/1) ... [2021-02-23 18:48:55,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55" (1/1) ... [2021-02-23 18:48:55,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55" (1/1) ... [2021-02-23 18:48:55,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55" (1/1) ... [2021-02-23 18:48:55,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55" (1/1) ... [2021-02-23 18:48:55,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55" (1/1) ... [2021-02-23 18:48:55,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55" (1/1) ... [2021-02-23 18:48:55,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:48:55,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:48:55,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:48:55,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:48:55,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-23 18:48:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:48:55,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:48:55,613 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:48:55,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:48:55,613 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2021-02-23 18:48:55,613 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2021-02-23 18:48:55,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:48:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:48:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:48:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:48:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:48:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:48:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:48:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:48:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-02-23 18:48:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-02-23 18:48:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-02-23 18:48:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-02-23 18:48:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2021-02-23 18:48:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-02-23 18:48:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-02-23 18:48:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-02-23 18:48:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-02-23 18:48:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-02-23 18:48:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-02-23 18:48:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2021-02-23 18:48:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2021-02-23 18:48:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-02-23 18:48:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2021-02-23 18:48:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2021-02-23 18:48:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2021-02-23 18:48:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2021-02-23 18:48:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2021-02-23 18:48:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2021-02-23 18:48:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2021-02-23 18:48:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2021-02-23 18:48:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2021-02-23 18:48:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2021-02-23 18:48:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2021-02-23 18:48:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2021-02-23 18:48:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:48:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:48:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:48:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:48:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:48:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:48:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:48:56,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:48:56,266 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:48:56,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:48:56 BoogieIcfgContainer [2021-02-23 18:48:56,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:48:56,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:48:56,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:48:56,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:48:56,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:48:54" (1/3) ... [2021-02-23 18:48:56,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8d4089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:48:56, skipping insertion in model container [2021-02-23 18:48:56,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:55" (2/3) ... [2021-02-23 18:48:56,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8d4089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:48:56, skipping insertion in model container [2021-02-23 18:48:56,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:48:56" (3/3) ... [2021-02-23 18:48:56,286 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-02-23 18:48:56,296 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:48:56,301 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:48:56,323 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:48:56,351 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:48:56,351 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:48:56,351 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:48:56,351 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:48:56,352 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:48:56,352 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:48:56,352 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:48:56,352 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:48:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2021-02-23 18:48:56,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-23 18:48:56,387 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:48:56,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:48:56,389 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:48:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:48:56,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1777091402, now seen corresponding path program 1 times [2021-02-23 18:48:56,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:48:56,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614075417] [2021-02-23 18:48:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:48:56,495 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:48:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:56,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:56,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:56,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:56,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:56,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:48:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:56,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:56,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 18:48:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:56,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:56,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:48:56,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614075417] [2021-02-23 18:48:56,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:48:56,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:48:56,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145938550] [2021-02-23 18:48:56,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:48:56,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:48:56,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:48:56,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:48:56,825 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2021-02-23 18:48:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:48:57,204 INFO L93 Difference]: Finished difference Result 232 states and 262 transitions. [2021-02-23 18:48:57,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:48:57,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-02-23 18:48:57,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:48:57,216 INFO L225 Difference]: With dead ends: 232 [2021-02-23 18:48:57,217 INFO L226 Difference]: Without dead ends: 106 [2021-02-23 18:48:57,221 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 [2021-02-23 18:48:57,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-23 18:48:57,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-02-23 18:48:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-23 18:48:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2021-02-23 18:48:57,282 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 52 [2021-02-23 18:48:57,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:48:57,283 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2021-02-23 18:48:57,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:48:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2021-02-23 18:48:57,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-23 18:48:57,286 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:48:57,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:48:57,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:48:57,287 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:48:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:48:57,289 INFO L82 PathProgramCache]: Analyzing trace with hash 57162465, now seen corresponding path program 1 times [2021-02-23 18:48:57,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:48:57,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778438528] [2021-02-23 18:48:57,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:48:57,293 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:48:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:57,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:57,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:57,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:57,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:57,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:57,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:57,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:48:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:57,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:57,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:57,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-23 18:48:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:57,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:57,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:48:57,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778438528] [2021-02-23 18:48:57,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:48:57,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:48:57,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231515010] [2021-02-23 18:48:57,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:48:57,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:48:57,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:48:57,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:48:57,459 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand 4 states. [2021-02-23 18:48:57,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:48:57,693 INFO L93 Difference]: Finished difference Result 193 states and 212 transitions. [2021-02-23 18:48:57,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:48:57,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2021-02-23 18:48:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:48:57,696 INFO L225 Difference]: With dead ends: 193 [2021-02-23 18:48:57,696 INFO L226 Difference]: Without dead ends: 107 [2021-02-23 18:48:57,698 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 [2021-02-23 18:48:57,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-23 18:48:57,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-02-23 18:48:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-02-23 18:48:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2021-02-23 18:48:57,717 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 64 [2021-02-23 18:48:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:48:57,718 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2021-02-23 18:48:57,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:48:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2021-02-23 18:48:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-23 18:48:57,720 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:48:57,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:48:57,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:48:57,721 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:48:57,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:48:57,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1846540770, now seen corresponding path program 1 times [2021-02-23 18:48:57,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:48:57,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141535498] [2021-02-23 18:48:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:48:57,726 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:48:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:57,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:57,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:57,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:57,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:48:57,934 WARN L141 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-02-23 18:48:57,936 WARN L147 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size 9 [2021-02-23 18:48:57,948 WARN L141 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-02-23 18:48:57,950 WARN L147 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size 15 [2021-02-23 18:48:57,981 WARN L141 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-02-23 18:48:57,983 WARN L147 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size 13 [2021-02-23 18:48:58,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:48:58,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:48:58,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:58,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:48:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:58,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:58,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-23 18:48:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:58,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:48:58,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141535498] [2021-02-23 18:48:58,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:48:58,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:48:58,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913771028] [2021-02-23 18:48:58,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:48:58,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:48:58,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:48:58,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:48:58,116 INFO L87 Difference]: Start difference. First operand 107 states and 116 transitions. Second operand 9 states. [2021-02-23 18:48:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:48:58,665 INFO L93 Difference]: Finished difference Result 212 states and 236 transitions. [2021-02-23 18:48:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 18:48:58,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-23 18:48:58,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:48:58,671 INFO L225 Difference]: With dead ends: 212 [2021-02-23 18:48:58,671 INFO L226 Difference]: Without dead ends: 210 [2021-02-23 18:48:58,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:48:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-02-23 18:48:58,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 167. [2021-02-23 18:48:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2021-02-23 18:48:58,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2021-02-23 18:48:58,701 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 66 [2021-02-23 18:48:58,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:48:58,702 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2021-02-23 18:48:58,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:48:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2021-02-23 18:48:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-23 18:48:58,706 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:48:58,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:48:58,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:48:58,706 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:48:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:48:58,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1494007365, now seen corresponding path program 1 times [2021-02-23 18:48:58,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:48:58,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470203999] [2021-02-23 18:48:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:48:58,710 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:48:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:58,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:58,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:48:58,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:48:58,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:48:58,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:48:58,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:48:58,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:48:58,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:48:58,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:48:58,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:48:58,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:48:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:58,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:58,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 18:48:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:58,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:58,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:48:58,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470203999] [2021-02-23 18:48:58,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:48:58,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 18:48:58,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133314690] [2021-02-23 18:48:58,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 18:48:58,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:48:58,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 18:48:58,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:48:58,944 INFO L87 Difference]: Start difference. First operand 167 states and 187 transitions. Second operand 12 states. [2021-02-23 18:48:59,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:48:59,726 INFO L93 Difference]: Finished difference Result 452 states and 513 transitions. [2021-02-23 18:48:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 18:48:59,726 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2021-02-23 18:48:59,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:48:59,735 INFO L225 Difference]: With dead ends: 452 [2021-02-23 18:48:59,735 INFO L226 Difference]: Without dead ends: 362 [2021-02-23 18:48:59,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-02-23 18:48:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-02-23 18:48:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 207. [2021-02-23 18:48:59,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2021-02-23 18:48:59,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 235 transitions. [2021-02-23 18:48:59,789 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 235 transitions. Word has length 69 [2021-02-23 18:48:59,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:48:59,789 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 235 transitions. [2021-02-23 18:48:59,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 18:48:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 235 transitions. [2021-02-23 18:48:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-23 18:48:59,792 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:48:59,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:48:59,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:48:59,793 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:48:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:48:59,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1869971361, now seen corresponding path program 1 times [2021-02-23 18:48:59,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:48:59,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267557312] [2021-02-23 18:48:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:48:59,797 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:48:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:59,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:59,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:59,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:59,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 18:48:59,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:59,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:48:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:59,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:59,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:59,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-23 18:48:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:48:59,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:48:59,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:48:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:48:59,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267557312] [2021-02-23 18:48:59,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:48:59,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:48:59,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196143302] [2021-02-23 18:48:59,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:48:59,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:48:59,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:48:59,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:48:59,899 INFO L87 Difference]: Start difference. First operand 207 states and 235 transitions. Second operand 4 states. [2021-02-23 18:49:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:00,119 INFO L93 Difference]: Finished difference Result 297 states and 336 transitions. [2021-02-23 18:49:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:49:00,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2021-02-23 18:49:00,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:00,121 INFO L225 Difference]: With dead ends: 297 [2021-02-23 18:49:00,122 INFO L226 Difference]: Without dead ends: 209 [2021-02-23 18:49:00,123 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 [2021-02-23 18:49:00,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-02-23 18:49:00,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-02-23 18:49:00,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-23 18:49:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 236 transitions. [2021-02-23 18:49:00,145 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 236 transitions. Word has length 69 [2021-02-23 18:49:00,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:00,145 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 236 transitions. [2021-02-23 18:49:00,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:49:00,146 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 236 transitions. [2021-02-23 18:49:00,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-23 18:49:00,148 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:00,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:00,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:49:00,149 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:00,150 INFO L82 PathProgramCache]: Analyzing trace with hash -762357340, now seen corresponding path program 1 times [2021-02-23 18:49:00,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:00,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933834449] [2021-02-23 18:49:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:00,153 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:00,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:00,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:00,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:00,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:00,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:00,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:00,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-23 18:49:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:00,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:00,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933834449] [2021-02-23 18:49:00,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:00,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:49:00,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240218524] [2021-02-23 18:49:00,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:49:00,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:00,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:49:00,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:49:00,238 INFO L87 Difference]: Start difference. First operand 209 states and 236 transitions. Second operand 5 states. [2021-02-23 18:49:00,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:00,527 INFO L93 Difference]: Finished difference Result 314 states and 353 transitions. [2021-02-23 18:49:00,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 18:49:00,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2021-02-23 18:49:00,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:00,535 INFO L225 Difference]: With dead ends: 314 [2021-02-23 18:49:00,543 INFO L226 Difference]: Without dead ends: 217 [2021-02-23 18:49:00,544 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 [2021-02-23 18:49:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-02-23 18:49:00,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 213. [2021-02-23 18:49:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-23 18:49:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2021-02-23 18:49:00,582 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 70 [2021-02-23 18:49:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:00,582 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2021-02-23 18:49:00,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:49:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2021-02-23 18:49:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-23 18:49:00,586 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:00,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:00,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:49:00,587 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:00,588 INFO L82 PathProgramCache]: Analyzing trace with hash 220442596, now seen corresponding path program 1 times [2021-02-23 18:49:00,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:00,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454182561] [2021-02-23 18:49:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:00,597 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:00,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:00,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:00,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:00,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 18:49:00,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:00,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-23 18:49:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:00,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:00,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:00,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454182561] [2021-02-23 18:49:00,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:00,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:49:00,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648255298] [2021-02-23 18:49:00,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:49:00,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:00,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:49:00,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:49:00,706 INFO L87 Difference]: Start difference. First operand 213 states and 240 transitions. Second operand 6 states. [2021-02-23 18:49:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:01,012 INFO L93 Difference]: Finished difference Result 386 states and 432 transitions. [2021-02-23 18:49:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 18:49:01,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2021-02-23 18:49:01,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:01,015 INFO L225 Difference]: With dead ends: 386 [2021-02-23 18:49:01,015 INFO L226 Difference]: Without dead ends: 274 [2021-02-23 18:49:01,016 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 [2021-02-23 18:49:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-02-23 18:49:01,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 217. [2021-02-23 18:49:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-23 18:49:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 243 transitions. [2021-02-23 18:49:01,038 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 243 transitions. Word has length 71 [2021-02-23 18:49:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:01,038 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 243 transitions. [2021-02-23 18:49:01,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:49:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 243 transitions. [2021-02-23 18:49:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-23 18:49:01,040 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:01,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:01,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:49:01,041 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:01,041 INFO L82 PathProgramCache]: Analyzing trace with hash -767764281, now seen corresponding path program 1 times [2021-02-23 18:49:01,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:01,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100187505] [2021-02-23 18:49:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:01,044 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:01,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:01,077 WARN L141 QuantifierPusher]: treesize reduction 1, result has 85.7 percent of original size [2021-02-23 18:49:01,078 WARN L147 QuantifierPusher]: treesize reduction 1, result has 85.7 percent of original size 6 [2021-02-23 18:49:01,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:01,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:01,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:01,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:01,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:01,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-23 18:49:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:01,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:01,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100187505] [2021-02-23 18:49:01,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:01,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:49:01,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503112717] [2021-02-23 18:49:01,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:49:01,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:01,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:49:01,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:49:01,162 INFO L87 Difference]: Start difference. First operand 217 states and 243 transitions. Second operand 6 states. [2021-02-23 18:49:01,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:01,518 INFO L93 Difference]: Finished difference Result 358 states and 400 transitions. [2021-02-23 18:49:01,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:49:01,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2021-02-23 18:49:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:01,521 INFO L225 Difference]: With dead ends: 358 [2021-02-23 18:49:01,521 INFO L226 Difference]: Without dead ends: 261 [2021-02-23 18:49:01,522 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 [2021-02-23 18:49:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-02-23 18:49:01,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 217. [2021-02-23 18:49:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-23 18:49:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 242 transitions. [2021-02-23 18:49:01,544 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 242 transitions. Word has length 72 [2021-02-23 18:49:01,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:01,544 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 242 transitions. [2021-02-23 18:49:01,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:49:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 242 transitions. [2021-02-23 18:49:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-23 18:49:01,546 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:01,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:01,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:49:01,547 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:01,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1330822876, now seen corresponding path program 1 times [2021-02-23 18:49:01,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:01,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7722397] [2021-02-23 18:49:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:01,550 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:01,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:01,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:01,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:01,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:01,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:01,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 18:49:01,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:01,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:01,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 18:49:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:01,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:01,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:01,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7722397] [2021-02-23 18:49:01,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:01,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:49:01,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69449748] [2021-02-23 18:49:01,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:49:01,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:01,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:49:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:49:01,705 INFO L87 Difference]: Start difference. First operand 217 states and 242 transitions. Second operand 8 states. [2021-02-23 18:49:02,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:02,175 INFO L93 Difference]: Finished difference Result 460 states and 514 transitions. [2021-02-23 18:49:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 18:49:02,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2021-02-23 18:49:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:02,178 INFO L225 Difference]: With dead ends: 460 [2021-02-23 18:49:02,178 INFO L226 Difference]: Without dead ends: 303 [2021-02-23 18:49:02,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:49:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-23 18:49:02,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 224. [2021-02-23 18:49:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2021-02-23 18:49:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 246 transitions. [2021-02-23 18:49:02,203 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 246 transitions. Word has length 74 [2021-02-23 18:49:02,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:02,203 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 246 transitions. [2021-02-23 18:49:02,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:49:02,204 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 246 transitions. [2021-02-23 18:49:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-02-23 18:49:02,205 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:02,205 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:02,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 18:49:02,205 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:02,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:02,206 INFO L82 PathProgramCache]: Analyzing trace with hash -448602513, now seen corresponding path program 1 times [2021-02-23 18:49:02,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:02,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892964294] [2021-02-23 18:49:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:02,238 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:49:02,240 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:02,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:02,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:02,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:02,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:02,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:02,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:49:02,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:02,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:02,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:02,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:02,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:02,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-02-23 18:49:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:02,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:02,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:02,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892964294] [2021-02-23 18:49:02,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:02,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:49:02,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691550025] [2021-02-23 18:49:02,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:49:02,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:02,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:49:02,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:49:02,411 INFO L87 Difference]: Start difference. First operand 224 states and 246 transitions. Second operand 10 states. [2021-02-23 18:49:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:03,055 INFO L93 Difference]: Finished difference Result 457 states and 502 transitions. [2021-02-23 18:49:03,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 18:49:03,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2021-02-23 18:49:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:03,058 INFO L225 Difference]: With dead ends: 457 [2021-02-23 18:49:03,059 INFO L226 Difference]: Without dead ends: 345 [2021-02-23 18:49:03,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:49:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-02-23 18:49:03,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 280. [2021-02-23 18:49:03,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2021-02-23 18:49:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 309 transitions. [2021-02-23 18:49:03,090 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 309 transitions. Word has length 76 [2021-02-23 18:49:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:03,091 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 309 transitions. [2021-02-23 18:49:03,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:49:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 309 transitions. [2021-02-23 18:49:03,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-02-23 18:49:03,092 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:03,093 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:03,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 18:49:03,093 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:03,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:03,094 INFO L82 PathProgramCache]: Analyzing trace with hash -825247660, now seen corresponding path program 1 times [2021-02-23 18:49:03,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:03,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374456798] [2021-02-23 18:49:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:03,100 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:49:03,102 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:03,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:03,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:03,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:49:03,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:49:03,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:49:03,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:49:03,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:03,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:03,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:03,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:03,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:03,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:03,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:03,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:03,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:03,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-23 18:49:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:03,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:03,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:03,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374456798] [2021-02-23 18:49:03,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:03,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 18:49:03,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270333644] [2021-02-23 18:49:03,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 18:49:03,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:03,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 18:49:03,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:49:03,316 INFO L87 Difference]: Start difference. First operand 280 states and 309 transitions. Second operand 14 states. [2021-02-23 18:49:04,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:04,066 INFO L93 Difference]: Finished difference Result 456 states and 498 transitions. [2021-02-23 18:49:04,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 18:49:04,067 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2021-02-23 18:49:04,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:04,069 INFO L225 Difference]: With dead ends: 456 [2021-02-23 18:49:04,070 INFO L226 Difference]: Without dead ends: 336 [2021-02-23 18:49:04,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-02-23 18:49:04,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-02-23 18:49:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 274. [2021-02-23 18:49:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2021-02-23 18:49:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 302 transitions. [2021-02-23 18:49:04,097 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 302 transitions. Word has length 79 [2021-02-23 18:49:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:04,098 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 302 transitions. [2021-02-23 18:49:04,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 18:49:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 302 transitions. [2021-02-23 18:49:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-23 18:49:04,099 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:04,100 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:04,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 18:49:04,100 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:04,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2146927954, now seen corresponding path program 1 times [2021-02-23 18:49:04,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:04,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224958524] [2021-02-23 18:49:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:04,108 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:49:04,110 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:04,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:04,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:04,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:04,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:04,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:04,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:49:04,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:04,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:04,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:04,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:04,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:04,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-02-23 18:49:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:04,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:04,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224958524] [2021-02-23 18:49:04,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:04,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:49:04,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638032334] [2021-02-23 18:49:04,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:49:04,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:04,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:49:04,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:49:04,277 INFO L87 Difference]: Start difference. First operand 274 states and 302 transitions. Second operand 10 states. [2021-02-23 18:49:04,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:04,852 INFO L93 Difference]: Finished difference Result 449 states and 494 transitions. [2021-02-23 18:49:04,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 18:49:04,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2021-02-23 18:49:04,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:04,855 INFO L225 Difference]: With dead ends: 449 [2021-02-23 18:49:04,855 INFO L226 Difference]: Without dead ends: 341 [2021-02-23 18:49:04,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:49:04,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-02-23 18:49:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 278. [2021-02-23 18:49:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2021-02-23 18:49:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 306 transitions. [2021-02-23 18:49:04,881 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 306 transitions. Word has length 80 [2021-02-23 18:49:04,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:04,882 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 306 transitions. [2021-02-23 18:49:04,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:49:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 306 transitions. [2021-02-23 18:49:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-02-23 18:49:04,883 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:04,884 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:04,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 18:49:04,884 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:04,885 INFO L82 PathProgramCache]: Analyzing trace with hash -157951433, now seen corresponding path program 1 times [2021-02-23 18:49:04,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:04,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019302355] [2021-02-23 18:49:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:04,891 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:49:04,893 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:04,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:04,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:04,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:04,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:04,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:04,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:04,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:04,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 18:49:04,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:04,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:05,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:05,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-23 18:49:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:05,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:05,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019302355] [2021-02-23 18:49:05,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:05,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:49:05,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792586590] [2021-02-23 18:49:05,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:49:05,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:05,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:49:05,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:49:05,018 INFO L87 Difference]: Start difference. First operand 278 states and 306 transitions. Second operand 10 states. [2021-02-23 18:49:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:05,681 INFO L93 Difference]: Finished difference Result 627 states and 694 transitions. [2021-02-23 18:49:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 18:49:05,682 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2021-02-23 18:49:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:05,685 INFO L225 Difference]: With dead ends: 627 [2021-02-23 18:49:05,686 INFO L226 Difference]: Without dead ends: 468 [2021-02-23 18:49:05,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-02-23 18:49:05,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-02-23 18:49:05,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 389. [2021-02-23 18:49:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2021-02-23 18:49:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 430 transitions. [2021-02-23 18:49:05,729 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 430 transitions. Word has length 85 [2021-02-23 18:49:05,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:05,730 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 430 transitions. [2021-02-23 18:49:05,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:49:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 430 transitions. [2021-02-23 18:49:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-02-23 18:49:05,732 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:05,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:05,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 18:49:05,733 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:05,733 INFO L82 PathProgramCache]: Analyzing trace with hash -851163776, now seen corresponding path program 2 times [2021-02-23 18:49:05,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:05,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869568623] [2021-02-23 18:49:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:05,742 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:49:05,743 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:05,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:05,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:05,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:05,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:05,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:05,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:05,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:05,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:49:05,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:05,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:05,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:05,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:05,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:05,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:05,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-02-23 18:49:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:05,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:05,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:05,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869568623] [2021-02-23 18:49:05,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:05,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 18:49:05,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255218941] [2021-02-23 18:49:05,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 18:49:05,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:05,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 18:49:05,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:49:05,922 INFO L87 Difference]: Start difference. First operand 389 states and 430 transitions. Second operand 12 states. [2021-02-23 18:49:06,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:06,760 INFO L93 Difference]: Finished difference Result 730 states and 805 transitions. [2021-02-23 18:49:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 18:49:06,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2021-02-23 18:49:06,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:06,764 INFO L225 Difference]: With dead ends: 730 [2021-02-23 18:49:06,765 INFO L226 Difference]: Without dead ends: 561 [2021-02-23 18:49:06,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:49:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-02-23 18:49:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 388. [2021-02-23 18:49:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2021-02-23 18:49:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 428 transitions. [2021-02-23 18:49:06,805 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 428 transitions. Word has length 86 [2021-02-23 18:49:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:06,806 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 428 transitions. [2021-02-23 18:49:06,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 18:49:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 428 transitions. [2021-02-23 18:49:06,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-23 18:49:06,808 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:06,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:06,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 18:49:06,808 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:06,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:06,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1979143261, now seen corresponding path program 2 times [2021-02-23 18:49:06,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:06,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351116449] [2021-02-23 18:49:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:06,816 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:49:06,818 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:06,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:06,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:06,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:49:06,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:49:06,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:49:06,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:49:06,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:06,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:06,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:06,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:06,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:06,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:06,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:06,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:06,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:06,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:07,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:07,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:07,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-02-23 18:49:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:07,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:07,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:07,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351116449] [2021-02-23 18:49:07,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:07,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 18:49:07,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654817240] [2021-02-23 18:49:07,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 18:49:07,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:07,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 18:49:07,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:49:07,055 INFO L87 Difference]: Start difference. First operand 388 states and 428 transitions. Second operand 16 states. [2021-02-23 18:49:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:08,024 INFO L93 Difference]: Finished difference Result 571 states and 626 transitions. [2021-02-23 18:49:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 18:49:08,025 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 89 [2021-02-23 18:49:08,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:08,027 INFO L225 Difference]: With dead ends: 571 [2021-02-23 18:49:08,027 INFO L226 Difference]: Without dead ends: 378 [2021-02-23 18:49:08,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2021-02-23 18:49:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-02-23 18:49:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 337. [2021-02-23 18:49:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-02-23 18:49:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 370 transitions. [2021-02-23 18:49:08,067 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 370 transitions. Word has length 89 [2021-02-23 18:49:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:08,067 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 370 transitions. [2021-02-23 18:49:08,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 18:49:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 370 transitions. [2021-02-23 18:49:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-23 18:49:08,069 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:08,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:08,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 18:49:08,069 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:08,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:08,070 INFO L82 PathProgramCache]: Analyzing trace with hash 801821473, now seen corresponding path program 1 times [2021-02-23 18:49:08,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:08,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167998577] [2021-02-23 18:49:08,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:08,075 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:49:08,077 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:08,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:08,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:08,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:08,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:08,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:08,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:08,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:08,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:49:08,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:49:08,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:08,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:08,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:08,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:08,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:08,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-02-23 18:49:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:08,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:08,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:49:08,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167998577] [2021-02-23 18:49:08,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:08,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 18:49:08,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898039773] [2021-02-23 18:49:08,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 18:49:08,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:08,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 18:49:08,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:49:08,240 INFO L87 Difference]: Start difference. First operand 337 states and 370 transitions. Second operand 12 states. [2021-02-23 18:49:09,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:09,046 INFO L93 Difference]: Finished difference Result 609 states and 669 transitions. [2021-02-23 18:49:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 18:49:09,046 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2021-02-23 18:49:09,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:09,050 INFO L225 Difference]: With dead ends: 609 [2021-02-23 18:49:09,050 INFO L226 Difference]: Without dead ends: 489 [2021-02-23 18:49:09,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:49:09,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-02-23 18:49:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 367. [2021-02-23 18:49:09,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2021-02-23 18:49:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 404 transitions. [2021-02-23 18:49:09,087 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 404 transitions. Word has length 90 [2021-02-23 18:49:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:09,088 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 404 transitions. [2021-02-23 18:49:09,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 18:49:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 404 transitions. [2021-02-23 18:49:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-23 18:49:09,090 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:09,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:49:09,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 18:49:09,091 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:09,091 INFO L82 PathProgramCache]: Analyzing trace with hash 766699332, now seen corresponding path program 2 times [2021-02-23 18:49:09,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:09,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150118306] [2021-02-23 18:49:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:09,100 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:49:09,102 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:49:09,117 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:49:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:49:09,133 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:49:09,174 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:49:09,174 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:49:09,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 18:49:09,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:49:09 BoogieIcfgContainer [2021-02-23 18:49:09,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:49:09,197 INFO L168 Benchmark]: Toolchain (without parser) took 14229.04 ms. Allocated memory was 154.1 MB in the beginning and 323.0 MB in the end (delta: 168.8 MB). Free memory was 131.1 MB in the beginning and 159.3 MB in the end (delta: -28.2 MB). Peak memory consumption was 141.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:49:09,197 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 154.1 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:49:09,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.69 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 118.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:49:09,198 INFO L168 Benchmark]: Boogie Preprocessor took 105.99 ms. Allocated memory is still 154.1 MB. Free memory was 118.5 MB in the beginning and 116.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:49:09,198 INFO L168 Benchmark]: RCFGBuilder took 780.95 ms. Allocated memory is still 154.1 MB. Free memory was 116.4 MB in the beginning and 116.5 MB in the end (delta: -99.1 kB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:49:09,198 INFO L168 Benchmark]: TraceAbstraction took 12919.82 ms. Allocated memory was 154.1 MB in the beginning and 323.0 MB in the end (delta: 168.8 MB). Free memory was 116.5 MB in the beginning and 159.3 MB in the end (delta: -42.8 MB). Peak memory consumption was 126.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:49:09,199 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 154.1 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 382.69 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 118.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 105.99 ms. Allocated memory is still 154.1 MB. Free memory was 118.5 MB in the beginning and 116.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 780.95 ms. Allocated memory is still 154.1 MB. Free memory was 116.4 MB in the beginning and 116.5 MB in the end (delta: -99.1 kB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12919.82 ms. Allocated memory was 154.1 MB in the beginning and 323.0 MB in the end (delta: 168.8 MB). Free memory was 116.5 MB in the beginning and 159.3 MB in the end (delta: -42.8 MB). Peak memory consumption was 126.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_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] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.8s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2154 SDtfs, 2727 SDslu, 8903 SDs, 0 SdLazy, 5509 SolverSat, 261 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 987 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...