/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-acceleration/const_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 03:02:14,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 03:02:14,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 03:02:15,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 03:02:15,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 03:02:15,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 03:02:15,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 03:02:15,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 03:02:15,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 03:02:15,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 03:02:15,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 03:02:15,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 03:02:15,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 03:02:15,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 03:02:15,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 03:02:15,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 03:02:15,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 03:02:15,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 03:02:15,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 03:02:15,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 03:02:15,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 03:02:15,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 03:02:15,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 03:02:15,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 03:02:15,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-01 03:02:15,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-01 03:02:15,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-01 03:02:15,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-01 03:02:15,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-01 03:02:15,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-01 03:02:15,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 03:02:15,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 03:02:15,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 03:02:15,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 03:02:15,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 03:02:15,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 03:02:15,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 03:02:15,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 03:02:15,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 03:02:15,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 03:02:15,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 03:02:15,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-01 03:02:15,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 03:02:15,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 03:02:15,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 03:02:15,074 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 03:02:15,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 03:02:15,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 03:02:15,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 03:02:15,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 03:02:15,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 03:02:15,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 03:02:15,075 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 03:02:15,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 03:02:15,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 03:02:15,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 03:02:15,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 03:02:15,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 03:02:15,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 03:02:15,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 03:02:15,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 03:02:15,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 03:02:15,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-01 03:02:15,077 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-01 03:02:15,077 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 03:02:15,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 03:02:15,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 03:02:15,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 03:02:15,354 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 03:02:15,354 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 03:02:15,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_1-2.c [2021-05-01 03:02:15,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1e5999f/d9a37396f65f454e837988d12c20ee27/FLAG4d6833a4e [2021-05-01 03:02:15,734 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 03:02:15,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_1-2.c [2021-05-01 03:02:15,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1e5999f/d9a37396f65f454e837988d12c20ee27/FLAG4d6833a4e [2021-05-01 03:02:16,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1e5999f/d9a37396f65f454e837988d12c20ee27 [2021-05-01 03:02:16,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 03:02:16,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-01 03:02:16,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 03:02:16,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 03:02:16,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 03:02:16,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:02:16" (1/1) ... [2021-05-01 03:02:16,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd55962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16, skipping insertion in model container [2021-05-01 03:02:16,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:02:16" (1/1) ... [2021-05-01 03:02:16,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 03:02:16,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 03:02:16,236 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_1-2.c[321,334] [2021-05-01 03:02:16,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 03:02:16,248 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 03:02:16,255 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_1-2.c[321,334] [2021-05-01 03:02:16,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 03:02:16,274 INFO L208 MainTranslator]: Completed translation [2021-05-01 03:02:16,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16 WrapperNode [2021-05-01 03:02:16,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 03:02:16,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 03:02:16,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 03:02:16,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 03:02:16,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16" (1/1) ... [2021-05-01 03:02:16,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16" (1/1) ... [2021-05-01 03:02:16,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16" (1/1) ... [2021-05-01 03:02:16,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16" (1/1) ... [2021-05-01 03:02:16,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16" (1/1) ... [2021-05-01 03:02:16,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16" (1/1) ... [2021-05-01 03:02:16,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16" (1/1) ... [2021-05-01 03:02:16,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 03:02:16,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 03:02:16,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 03:02:16,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 03:02:16,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16" (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 [2021-05-01 03:02:16,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 03:02:16,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 03:02:16,373 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 03:02:16,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 03:02:16,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 03:02:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 03:02:16,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 03:02:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 03:02:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 03:02:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 03:02:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 03:02:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 03:02:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 03:02:16,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 03:02:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 03:02:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 03:02:16,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 03:02:16,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 03:02:16,568 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 03:02:16,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:02:16 BoogieIcfgContainer [2021-05-01 03:02:16,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 03:02:16,570 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-01 03:02:16,570 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-01 03:02:16,570 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-01 03:02:16,572 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:02:16" (1/1) ... [2021-05-01 03:02:16,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-05-01 03:02:16,605 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2 4294967296) 1024) InVars {main_~y~0=v_main_~y~0_2} OutVars{main_~y~0=v_main_~y~0_2} AuxVars[] AssignedVars[] [2021-05-01 03:02:16,619 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.8 percent of original size [2021-05-01 03:02:16,627 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,629 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,632 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,635 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,638 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,647 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,676 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 03:02:16,692 INFO L108 tifierPushTermWalker]: treesize reduction 14, result has 6.7 percent of original size [2021-05-01 03:02:16,697 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,710 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,715 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,739 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,745 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,751 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.8 percent of original size 60 [2021-05-01 03:02:16,787 INFO L1111 elerationTransformer]: Accelerated Formula: (and (< (mod v_main_~y~0_2 4294967296) 1024) (= v_main_~y~0_1 (+ v_main_~y~0_2 1)) (= v_main_~x~0_1 0)) InVars {main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_~y~0=v_main_~y~0_1, main_#t~post7=|v_main_#t~post7_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post7] with Formula: (let ((.cse0 (mod v_main_~y~0_2 4294967296))) (or (let ((.cse1 (+ v_itFin_1 v_main_~y~0_2))) (and (< .cse0 1024) (<= 1024 (mod .cse1 4294967296)) (< 0 v_itFin_1) (= v_main_~y~0_1 .cse1) (<= (div (+ (* v_itFin_1 (- 1)) (* v_main_~y~0_2 (- 1)) 1024) (- 4294967296)) (+ (div (+ v_main_~y~0_2 (- 4294967295)) 4294967296) 1)) (= v_main_~x~0_1 0))) (and (= v_main_~y~0_2 v_main_~y~0_1) (= |v_main_#t~post7_3| |v_main_#t~post7_1|) (= v_itFin_1 0) (= v_main_~x~0_5 v_main_~x~0_1) (<= 1024 .cse0)))) InVars {main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_5, main_#t~post7=|v_main_#t~post7_3|} OutVars{main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_1, main_#t~post7=|v_main_#t~post7_1|} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_~y~0, main_#t~post7] [2021-05-01 03:02:16,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:02:16 BasicIcfg [2021-05-01 03:02:16,793 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-01 03:02:16,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 03:02:16,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 03:02:16,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 03:02:16,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 03:02:16" (1/4) ... [2021-05-01 03:02:16,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182a8b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:02:16, skipping insertion in model container [2021-05-01 03:02:16,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:02:16" (2/4) ... [2021-05-01 03:02:16,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182a8b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:02:16, skipping insertion in model container [2021-05-01 03:02:16,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:02:16" (3/4) ... [2021-05-01 03:02:16,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182a8b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:02:16, skipping insertion in model container [2021-05-01 03:02:16,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:02:16" (4/4) ... [2021-05-01 03:02:16,798 INFO L111 eAbstractionObserver]: Analyzing ICFG const_1-2.cJordan [2021-05-01 03:02:16,802 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-01 03:02:16,808 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 03:02:16,820 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 03:02:16,832 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 03:02:16,832 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-01 03:02:16,832 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-01 03:02:16,833 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 03:02:16,833 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 03:02:16,833 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 03:02:16,833 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 03:02:16,833 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 03:02:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 03:02:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 03:02:16,847 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 03:02:16,848 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 03:02:16,848 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 03:02:16,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 03:02:16,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2021-05-01 03:02:16,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 03:02:16,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370445340] [2021-05-01 03:02:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 03:02:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:02:16,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:02:16,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:02:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 03:02:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:02:16,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:16,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:02:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 03:02:16,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 03:02:16,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370445340] [2021-05-01 03:02:16,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370445340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 03:02:16,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 03:02:16,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 03:02:16,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802588046] [2021-05-01 03:02:16,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 03:02:16,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 03:02:16,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 03:02:16,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 03:02:16,981 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:02:17,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 03:02:17,023 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-05-01 03:02:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 03:02:17,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 03:02:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 03:02:17,029 INFO L225 Difference]: With dead ends: 18 [2021-05-01 03:02:17,029 INFO L226 Difference]: Without dead ends: 12 [2021-05-01 03:02:17,030 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 03:02:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-05-01 03:02:17,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-05-01 03:02:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:02:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-05-01 03:02:17,048 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-05-01 03:02:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 03:02:17,048 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-05-01 03:02:17,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:02:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-05-01 03:02:17,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 03:02:17,049 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 03:02:17,050 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 03:02:17,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 03:02:17,050 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 03:02:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 03:02:17,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2021-05-01 03:02:17,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 03:02:17,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314893360] [2021-05-01 03:02:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 03:02:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:02:17,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:17,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:02:17,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:17,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 03:02:17,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:17,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:02:17,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 03:02:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:02:17,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:02:17,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:02:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 03:02:17,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 03:02:17,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314893360] [2021-05-01 03:02:17,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314893360] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 03:02:17,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 03:02:17,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 03:02:17,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174190736] [2021-05-01 03:02:17,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-01 03:02:17,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 03:02:17,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-01 03:02:17,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-01 03:02:17,169 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:02:17,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 03:02:17,212 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-05-01 03:02:17,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-01 03:02:17,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 03:02:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 03:02:17,213 INFO L225 Difference]: With dead ends: 13 [2021-05-01 03:02:17,213 INFO L226 Difference]: Without dead ends: 13 [2021-05-01 03:02:17,213 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-01 03:02:17,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-01 03:02:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-01 03:02:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:02:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-01 03:02:17,216 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-01 03:02:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 03:02:17,217 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-01 03:02:17,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 03:02:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-01 03:02:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 03:02:17,217 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 03:02:17,217 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 03:02:17,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 03:02:17,218 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 03:02:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 03:02:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash -814146699, now seen corresponding path program 1 times [2021-05-01 03:02:17,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 03:02:17,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606993630] [2021-05-01 03:02:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 03:02:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 03:02:17,237 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 03:02:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 03:02:17,258 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 03:02:17,271 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-01 03:02:17,271 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 03:02:17,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 03:02:17,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:02:17 BasicIcfg [2021-05-01 03:02:17,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 03:02:17,290 INFO L168 Benchmark]: Toolchain (without parser) took 1150.96 ms. Allocated memory is still 207.6 MB. Free memory was 172.6 MB in the beginning and 162.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2021-05-01 03:02:17,290 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 207.6 MB. Free memory is still 189.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 03:02:17,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.44 ms. Allocated memory is still 207.6 MB. Free memory was 172.6 MB in the beginning and 192.0 MB in the end (delta: -19.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2021-05-01 03:02:17,292 INFO L168 Benchmark]: Boogie Preprocessor took 35.52 ms. Allocated memory is still 207.6 MB. Free memory was 192.0 MB in the beginning and 190.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 03:02:17,295 INFO L168 Benchmark]: RCFGBuilder took 256.77 ms. Allocated memory is still 207.6 MB. Free memory was 190.4 MB in the beginning and 177.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-01 03:02:17,295 INFO L168 Benchmark]: IcfgTransformer took 223.77 ms. Allocated memory is still 207.6 MB. Free memory was 177.8 MB in the beginning and 161.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-01 03:02:17,295 INFO L168 Benchmark]: TraceAbstraction took 494.52 ms. Allocated memory is still 207.6 MB. Free memory was 160.8 MB in the beginning and 162.8 MB in the end (delta: -1.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 03:02:17,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 207.6 MB. Free memory is still 189.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 134.44 ms. Allocated memory is still 207.6 MB. Free memory was 172.6 MB in the beginning and 192.0 MB in the end (delta: -19.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.52 ms. Allocated memory is still 207.6 MB. Free memory was 192.0 MB in the beginning and 190.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 256.77 ms. Allocated memory is still 207.6 MB. Free memory was 190.4 MB in the beginning and 177.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 223.77 ms. Allocated memory is still 207.6 MB. Free memory was 177.8 MB in the beginning and 161.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 494.52 ms. Allocated memory is still 207.6 MB. Free memory was 160.8 MB in the beginning and 162.8 MB in the end (delta: -1.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] unsigned int x = 1; [L14] unsigned int y = 0; VAL [x=1, y=0] [L16] COND TRUE y < 1024 [L17] x = 0 [L18] y++ VAL [x=0, y=1024, y++=1025] [L16] COND FALSE !(y < 1024) VAL [x=0, y=1024, y++=1025] [L21] CALL __VERIFIER_assert(x == 1) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 441.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.9ms, AutomataDifference: 105.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 15 SDslu, 10 SDs, 0 SdLazy, 14 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.3ms SsaConstructionTime, 57.6ms SatisfiabilityAnalysisTime, 127.4ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 82 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...