/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -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-c225d54 [2021-05-02 18:06:15,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:06:15,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:06:15,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:06:15,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:06:15,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:06:15,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:06:15,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:06:15,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:06:15,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:06:15,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:06:15,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:06:15,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:06:15,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:06:15,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:06:15,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:06:15,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:06:15,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:06:15,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:06:15,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:06:15,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:06:15,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:06:15,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:06:15,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:06:15,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 18:06:15,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 18:06:15,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 18:06:15,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 18:06:15,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 18:06:15,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 18:06:15,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 18:06:15,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 18:06:15,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 18:06:15,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 18:06:15,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 18:06:15,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 18:06:15,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 18:06:15,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 18:06:15,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:06:15,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:06:15,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:06:15,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:06:15,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:06:15,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:06:15,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:06:15,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:06:15,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:06:15,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:06:15,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:06:15,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:06:15,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:06:15,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:06:15,814 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:06:15,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:06:15,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:06:15,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:06:15,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:06:15,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:06:15,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:06:15,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:06:15,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:06:15,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:06:15,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:06:15,815 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:06:15,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:06:16,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:06:16,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:06:16,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:06:16,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:06:16,074 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:06:16,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2021-05-02 18:06:16,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b204d498/7ceb6ef77d164179bc64c82b806afee0/FLAG3ab542b89 [2021-05-02 18:06:16,619 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:06:16,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2021-05-02 18:06:16,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b204d498/7ceb6ef77d164179bc64c82b806afee0/FLAG3ab542b89 [2021-05-02 18:06:17,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b204d498/7ceb6ef77d164179bc64c82b806afee0 [2021-05-02 18:06:17,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:06:17,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:06:17,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:06:17,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:06:17,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:06:17,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:06:17" (1/1) ... [2021-05-02 18:06:17,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3738ae1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17, skipping insertion in model container [2021-05-02 18:06:17,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:06:17" (1/1) ... [2021-05-02 18:06:17,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:06:17,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:06:17,213 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/simple_2-2.c[372,385] [2021-05-02 18:06:17,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:06:17,224 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:06:17,239 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/simple_2-2.c[372,385] [2021-05-02 18:06:17,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:06:17,268 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:06:17,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17 WrapperNode [2021-05-02 18:06:17,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:06:17,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:06:17,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:06:17,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:06:17,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17" (1/1) ... [2021-05-02 18:06:17,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17" (1/1) ... [2021-05-02 18:06:17,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17" (1/1) ... [2021-05-02 18:06:17,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17" (1/1) ... [2021-05-02 18:06:17,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17" (1/1) ... [2021-05-02 18:06:17,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17" (1/1) ... [2021-05-02 18:06:17,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17" (1/1) ... [2021-05-02 18:06:17,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:06:17,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:06:17,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:06:17,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:06:17,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17" (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 [2021-05-02 18:06:17,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:06:17,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:06:17,378 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:06:17,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:06:17,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:06:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:06:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:06:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:06:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:06:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 18:06:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:06:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:06:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:06:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:06:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:06:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:06:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:06:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:06:17,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:06:17,566 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:06:17,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:06:17 BoogieIcfgContainer [2021-05-02 18:06:17,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:06:17,568 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:06:17,568 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:06:17,569 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:06:17,570 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:06:17" (1/1) ... [2021-05-02 18:06:17,603 INFO L181 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[] [2021-05-02 18:06:17,616 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.1 percent of original size [2021-05-02 18:06:17,740 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.1 percent of original size 54 [2021-05-02 18:06:17,767 INFO L1112 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] [2021-05-02 18:06:17,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:06:17 BasicIcfg [2021-05-02 18:06:17,773 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:06:17,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:06:17,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:06:17,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:06:17,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:06:17" (1/4) ... [2021-05-02 18:06:17,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a92cd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:06:17, skipping insertion in model container [2021-05-02 18:06:17,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:06:17" (2/4) ... [2021-05-02 18:06:17,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a92cd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:06:17, skipping insertion in model container [2021-05-02 18:06:17,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:06:17" (3/4) ... [2021-05-02 18:06:17,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a92cd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:06:17, skipping insertion in model container [2021-05-02 18:06:17,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:06:17" (4/4) ... [2021-05-02 18:06:17,778 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_2-2.cJordan [2021-05-02 18:06:17,781 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:06:17,783 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:06:17,793 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:06:17,804 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:06:17,804 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:06:17,804 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:06:17,804 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:06:17,804 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:06:17,804 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:06:17,804 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:06:17,805 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:06:17,813 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) [2021-05-02 18:06:17,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:06:17,817 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:06:17,818 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:06:17,818 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:06:17,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:06:17,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2021-05-02 18:06:17,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:06:17,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102721726] [2021-05-02 18:06:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:06:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:06:17,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:06:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:06:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:06:17,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:06:17,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102721726] [2021-05-02 18:06:17,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102721726] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:06:17,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:06:17,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:06:17,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849954515] [2021-05-02 18:06:17,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:06:17,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:06:17,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:06:17,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:06:17,991 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) [2021-05-02 18:06:18,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:06:18,025 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-05-02 18:06:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:06:18,027 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 [2021-05-02 18:06:18,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:06:18,031 INFO L225 Difference]: With dead ends: 18 [2021-05-02 18:06:18,032 INFO L226 Difference]: Without dead ends: 12 [2021-05-02 18:06:18,033 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:06:18,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-05-02 18:06:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-05-02 18:06:18,050 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) [2021-05-02 18:06:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-05-02 18:06:18,052 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-05-02 18:06:18,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:06:18,052 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-05-02 18:06:18,052 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) [2021-05-02 18:06:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-05-02 18:06:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:06:18,053 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:06:18,053 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:06:18,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:06:18,054 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:06:18,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:06:18,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2021-05-02 18:06:18,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:06:18,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162707874] [2021-05-02 18:06:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:06:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 18:06:18,096 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 18:06:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 18:06:18,121 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 18:06:18,144 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-02 18:06:18,144 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 18:06:18,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:06:18,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:06:18 BasicIcfg [2021-05-02 18:06:18,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:06:18,164 INFO L168 Benchmark]: Toolchain (without parser) took 1046.63 ms. Allocated memory is still 220.2 MB. Free memory was 184.4 MB in the beginning and 197.6 MB in the end (delta: -13.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:06:18,164 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 220.2 MB. Free memory is still 200.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:06:18,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.97 ms. Allocated memory is still 220.2 MB. Free memory was 184.3 MB in the beginning and 202.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:06:18,166 INFO L168 Benchmark]: Boogie Preprocessor took 30.11 ms. Allocated memory is still 220.2 MB. Free memory was 202.9 MB in the beginning and 201.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:06:18,166 INFO L168 Benchmark]: RCFGBuilder took 266.61 ms. Allocated memory is still 220.2 MB. Free memory was 201.4 MB in the beginning and 189.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:06:18,168 INFO L168 Benchmark]: IcfgTransformer took 204.71 ms. Allocated memory is still 220.2 MB. Free memory was 189.3 MB in the beginning and 176.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:06:18,168 INFO L168 Benchmark]: TraceAbstraction took 389.34 ms. Allocated memory is still 220.2 MB. Free memory was 175.7 MB in the beginning and 197.6 MB in the end (delta: -22.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:06:18,172 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 0.09 ms. Allocated memory is still 220.2 MB. Free memory is still 200.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 148.97 ms. Allocated memory is still 220.2 MB. Free memory was 184.3 MB in the beginning and 202.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.11 ms. Allocated memory is still 220.2 MB. Free memory was 202.9 MB in the beginning and 201.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 266.61 ms. Allocated memory is still 220.2 MB. Free memory was 201.4 MB in the beginning and 189.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 204.71 ms. Allocated memory is still 220.2 MB. Free memory was 189.3 MB in the beginning and 176.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 389.34 ms. Allocated memory is still 220.2 MB. Free memory was 175.7 MB in the beginning and 197.6 MB in the end (delta: -22.0 MB). There was no memory consumed. 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: 343.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.5ms, AutomataDifference: 53.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 9 SDslu, 3 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.2ms 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: 10.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.0ms SsaConstructionTime, 47.4ms SatisfiabilityAnalysisTime, 83.3ms 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...