/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/simple_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 03:30:59,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 03:30:59,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 03:30:59,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 03:30:59,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 03:30:59,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 03:30:59,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 03:30:59,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 03:30:59,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 03:30:59,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 03:30:59,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 03:30:59,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 03:30:59,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 03:30:59,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 03:30:59,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 03:30:59,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 03:30:59,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 03:30:59,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 03:30:59,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 03:30:59,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 03:30:59,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 03:30:59,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 03:30:59,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 03:30:59,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 03:30:59,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-16 03:30:59,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-16 03:30:59,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-16 03:30:59,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-16 03:30:59,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-16 03:30:59,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-16 03:30:59,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 03:30:59,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 03:30:59,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 03:30:59,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 03:30:59,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 03:30:59,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 03:30:59,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 03:30:59,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 03:30:59,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 03:30:59,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 03:30:59,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 03:30:59,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-04-16 03:30:59,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 03:30:59,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 03:30:59,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 03:30:59,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 03:30:59,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 03:30:59,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 03:30:59,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 03:30:59,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 03:30:59,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 03:30:59,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 03:30:59,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 03:30:59,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 03:30:59,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 03:30:59,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 03:30:59,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 03:30:59,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 03:30:59,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 03:30:59,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 03:30:59,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 03:30:59,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 03:30:59,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 03:30:59,139 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-04-16 03:30:59,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 03:30:59,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 03:30:59,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 03:30:59,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 03:30:59,387 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 03:30:59,387 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 03:30:59,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2021-04-16 03:30:59,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cecf468/c1a7906d266a4389a9f46c957d400114/FLAG5796ea4f6 [2021-04-16 03:30:59,786 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 03:30:59,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2021-04-16 03:30:59,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cecf468/c1a7906d266a4389a9f46c957d400114/FLAG5796ea4f6 [2021-04-16 03:30:59,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22cecf468/c1a7906d266a4389a9f46c957d400114 [2021-04-16 03:30:59,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 03:30:59,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-16 03:30:59,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 03:30:59,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 03:30:59,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 03:30:59,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 03:30:59" (1/1) ... [2021-04-16 03:30:59,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100dea3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59, skipping insertion in model container [2021-04-16 03:30:59,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 03:30:59" (1/1) ... [2021-04-16 03:30:59,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 03:30:59,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 03:30:59,951 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-2.c[372,385] [2021-04-16 03:30:59,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 03:30:59,969 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 03:30:59,978 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-2.c[372,385] [2021-04-16 03:30:59,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 03:30:59,989 INFO L208 MainTranslator]: Completed translation [2021-04-16 03:30:59,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59 WrapperNode [2021-04-16 03:30:59,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 03:30:59,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 03:30:59,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 03:30:59,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 03:31:00,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59" (1/1) ... [2021-04-16 03:31:00,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59" (1/1) ... [2021-04-16 03:31:00,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59" (1/1) ... [2021-04-16 03:31:00,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59" (1/1) ... [2021-04-16 03:31:00,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59" (1/1) ... [2021-04-16 03:31:00,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59" (1/1) ... [2021-04-16 03:31:00,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59" (1/1) ... [2021-04-16 03:31:00,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 03:31:00,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 03:31:00,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 03:31:00,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 03:31:00,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59" (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 [2021-04-16 03:31:00,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 03:31:00,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 03:31:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 03:31:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 03:31:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 03:31:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 03:31:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 03:31:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 03:31:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 03:31:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-04-16 03:31:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 03:31:00,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 03:31:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 03:31:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 03:31:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 03:31:00,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 03:31:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 03:31:00,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 03:31:00,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 03:31:00,304 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 03:31:00,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:31:00 BoogieIcfgContainer [2021-04-16 03:31:00,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 03:31:00,305 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-04-16 03:31:00,305 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-04-16 03:31:00,306 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-04-16 03:31:00,307 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:31:00" (1/1) ... [2021-04-16 03:31:00,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 03:31:00,338 INFO L175 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_4 4294967296) 268435455) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_4} AuxVars[] AssignedVars[] [2021-04-16 03:31:00,354 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.1 percent of original size [2021-04-16 03:31:00,376 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,400 INFO L108 tifierPushTermWalker]: treesize reduction 14, result has 6.7 percent of original size [2021-04-16 03:31:00,419 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 03:31:00,423 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,429 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,432 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,438 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,459 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,464 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,467 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,476 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,478 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.1 percent of original size 54 [2021-04-16 03:31:00,513 INFO L1067 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_3 (+ v_main_~x~0_4 1)) (< (mod v_main_~x~0_4 4294967296) 268435455)) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_3, main_#t~post8=|v_main_#t~post8_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post8] with Formula: (let ((.cse0 (mod v_main_~x~0_4 4294967296))) (or (and (= v_itFin_1 0) (= |v_main_#t~post8_3| |v_main_#t~post8_1|) (= v_main_~x~0_4 v_main_~x~0_3) (<= 268435455 .cse0)) (let ((.cse1 (+ v_itFin_1 v_main_~x~0_4))) (and (< 0 v_itFin_1) (<= 268435455 (mod .cse1 4294967296)) (= v_main_~x~0_3 .cse1) (<= (div (+ (* v_itFin_1 (- 1)) (* v_main_~x~0_4 (- 1)) 268435455) (- 4294967296)) (+ (div (+ v_main_~x~0_4 (- 4294967295)) 4294967296) 1)) (< .cse0 268435455))))) InVars {main_~x~0=v_main_~x~0_4, main_#t~post8=|v_main_#t~post8_3|} OutVars{main_~x~0=v_main_~x~0_3, main_#t~post8=|v_main_#t~post8_1|} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_#t~post8] [2021-04-16 03:31:00,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 03:31:00 BasicIcfg [2021-04-16 03:31:00,521 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-04-16 03:31:00,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 03:31:00,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 03:31:00,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 03:31:00,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 03:30:59" (1/4) ... [2021-04-16 03:31:00,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4a4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 03:31:00, skipping insertion in model container [2021-04-16 03:31:00,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:30:59" (2/4) ... [2021-04-16 03:31:00,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4a4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 03:31:00, skipping insertion in model container [2021-04-16 03:31:00,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:31:00" (3/4) ... [2021-04-16 03:31:00,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4a4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 03:31:00, skipping insertion in model container [2021-04-16 03:31:00,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 03:31:00" (4/4) ... [2021-04-16 03:31:00,526 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_2-2.cJordan [2021-04-16 03:31:00,534 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-04-16 03:31:00,537 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 03:31:00,549 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 03:31:00,568 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 03:31:00,568 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-16 03:31:00,568 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-04-16 03:31:00,568 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 03:31:00,568 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 03:31:00,568 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 03:31:00,568 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 03:31:00,568 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 03:31:00,579 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) [2021-04-16 03:31:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 03:31:00,584 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:31:00,585 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:31:00,585 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:31:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:31:00,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2021-04-16 03:31:00,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:31:00,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014392056] [2021-04-16 03:31:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:31:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:31:00,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:31:00,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:31:00,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 03:31:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:31:00,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:31:00,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:31:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:31:00,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014392056] [2021-04-16 03:31:00,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 03:31:00,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 03:31:00,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804659019] [2021-04-16 03:31:00,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 03:31:00,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 03:31:00,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 03:31:00,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 03:31:00,768 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) [2021-04-16 03:31:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 03:31:00,798 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-04-16 03:31:00,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 03:31:00,799 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 [2021-04-16 03:31:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 03:31:00,804 INFO L225 Difference]: With dead ends: 18 [2021-04-16 03:31:00,804 INFO L226 Difference]: Without dead ends: 12 [2021-04-16 03:31:00,805 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 03:31:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-04-16 03:31:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-04-16 03:31:00,823 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) [2021-04-16 03:31:00,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-04-16 03:31:00,825 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-04-16 03:31:00,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 03:31:00,825 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-04-16 03:31:00,825 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) [2021-04-16 03:31:00,825 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-04-16 03:31:00,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 03:31:00,826 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:31:00,826 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:31:00,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 03:31:00,827 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:31:00,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:31:00,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2021-04-16 03:31:00,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:31:00,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895874288] [2021-04-16 03:31:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:31:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 03:31:00,861 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 03:31:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 03:31:00,884 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 03:31:00,905 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-16 03:31:00,905 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 03:31:00,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 03:31:00,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 03:31:00 BasicIcfg [2021-04-16 03:31:00,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 03:31:00,926 INFO L168 Benchmark]: Toolchain (without parser) took 1116.91 ms. Allocated memory is still 197.1 MB. Free memory was 163.3 MB in the beginning and 126.7 MB in the end (delta: 36.6 MB). Peak memory consumption was 37.1 MB. Max. memory is 8.0 GB. [2021-04-16 03:31:00,927 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 197.1 MB. Free memory was 179.6 MB in the beginning and 179.5 MB in the end (delta: 115.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 03:31:00,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.91 ms. Allocated memory is still 197.1 MB. Free memory was 163.1 MB in the beginning and 153.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-04-16 03:31:00,928 INFO L168 Benchmark]: Boogie Preprocessor took 41.56 ms. Allocated memory is still 197.1 MB. Free memory was 153.9 MB in the beginning and 182.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2021-04-16 03:31:00,929 INFO L168 Benchmark]: RCFGBuilder took 252.43 ms. Allocated memory is still 197.1 MB. Free memory was 182.3 MB in the beginning and 169.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-04-16 03:31:00,929 INFO L168 Benchmark]: IcfgTransformer took 215.45 ms. Allocated memory is still 197.1 MB. Free memory was 169.2 MB in the beginning and 155.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 03:31:00,932 INFO L168 Benchmark]: TraceAbstraction took 403.34 ms. Allocated memory is still 197.1 MB. Free memory was 155.1 MB in the beginning and 126.7 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-04-16 03:31:00,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {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 0.10 ms. Allocated memory is still 197.1 MB. Free memory was 179.6 MB in the beginning and 179.5 MB in the end (delta: 115.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 177.91 ms. Allocated memory is still 197.1 MB. Free memory was 163.1 MB in the beginning and 153.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.56 ms. Allocated memory is still 197.1 MB. Free memory was 153.9 MB in the beginning and 182.3 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 252.43 ms. Allocated memory is still 197.1 MB. Free memory was 182.3 MB in the beginning and 169.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * IcfgTransformer took 215.45 ms. Allocated memory is still 197.1 MB. Free memory was 169.2 MB in the beginning and 155.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 403.34 ms. Allocated memory is still 197.1 MB. Free memory was 155.1 MB in the beginning and 126.7 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = __VERIFIER_nondet_uint(); [L16] COND FALSE !(x < 0x0fffffff) VAL [x=268435455] [L20] CALL __VERIFIER_assert(x > 0x0fffffff) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] 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: 340.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.8ms, AutomataDifference: 46.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 9 SDslu, 3 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.3ms SsaConstructionTime, 51.6ms SatisfiabilityAnalysisTime, 78.3ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...