/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/multivar_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 17:54:35,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 17:54:35,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 17:54:35,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 17:54:35,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 17:54:35,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 17:54:35,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 17:54:35,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 17:54:35,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 17:54:35,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 17:54:35,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 17:54:35,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 17:54:35,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 17:54:35,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 17:54:35,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 17:54:35,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 17:54:35,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 17:54:35,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 17:54:35,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 17:54:35,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 17:54:35,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 17:54:35,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 17:54:35,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 17:54:35,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 17:54:35,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 17:54:35,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 17:54:35,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 17:54:35,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 17:54:35,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 17:54:35,104 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 17:54:35,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 17:54:35,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 17:54:35,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 17:54:35,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 17:54:35,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 17:54:35,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 17:54:35,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 17:54:35,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 17:54:35,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 17:54:35,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 17:54:35,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 17:54:35,107 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 17:54:35,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 17:54:35,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 17:54:35,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 17:54:35,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 17:54:35,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 17:54:35,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 17:54:35,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 17:54:35,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 17:54:35,109 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 17:54:35,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 17:54:35,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 17:54:35,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 17:54:35,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 17:54:35,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 17:54:35,380 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 17:54:35,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2021-05-02 17:54:35,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9ca7fd09/22b21cb10eee44a38d084340b51ecc52/FLAG8b0bf0c88 [2021-05-02 17:54:35,759 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 17:54:35,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_1-2.c [2021-05-02 17:54:35,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9ca7fd09/22b21cb10eee44a38d084340b51ecc52/FLAG8b0bf0c88 [2021-05-02 17:54:36,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9ca7fd09/22b21cb10eee44a38d084340b51ecc52 [2021-05-02 17:54:36,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 17:54:36,183 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 17:54:36,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 17:54:36,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 17:54:36,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 17:54:36,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:54:36" (1/1) ... [2021-05-02 17:54:36,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10de5834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36, skipping insertion in model container [2021-05-02 17:54:36,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:54:36" (1/1) ... [2021-05-02 17:54:36,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 17:54:36,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 17:54:36,297 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/multivar_1-2.c[374,387] [2021-05-02 17:54:36,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:54:36,311 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 17:54:36,319 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/multivar_1-2.c[374,387] [2021-05-02 17:54:36,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:54:36,330 INFO L208 MainTranslator]: Completed translation [2021-05-02 17:54:36,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36 WrapperNode [2021-05-02 17:54:36,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 17:54:36,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 17:54:36,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 17:54:36,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 17:54:36,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36" (1/1) ... [2021-05-02 17:54:36,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36" (1/1) ... [2021-05-02 17:54:36,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36" (1/1) ... [2021-05-02 17:54:36,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36" (1/1) ... [2021-05-02 17:54:36,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36" (1/1) ... [2021-05-02 17:54:36,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36" (1/1) ... [2021-05-02 17:54:36,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36" (1/1) ... [2021-05-02 17:54:36,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 17:54:36,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 17:54:36,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 17:54:36,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 17:54:36,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36" (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 17:54:36,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 17:54:36,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 17:54:36,515 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 17:54:36,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 17:54:36,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 17:54:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 17:54:36,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 17:54:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 17:54:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 17:54:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 17:54:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 17:54:36,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 17:54:36,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 17:54:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 17:54:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 17:54:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 17:54:36,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 17:54:36,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 17:54:36,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 17:54:36,751 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 17:54:36,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:54:36 BoogieIcfgContainer [2021-05-02 17:54:36,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 17:54:36,754 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 17:54:36,754 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 17:54:36,755 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 17:54:36,757 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:54:36" (1/1) ... [2021-05-02 17:54:36,801 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_4 4294967296) 1024) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_4} AuxVars[] AssignedVars[] [2021-05-02 17:54:36,825 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 94.2 percent of original size [2021-05-02 17:54:36,949 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 94.2 percent of original size 65 [2021-05-02 17:54:37,005 INFO L1112 elerationTransformer]: Accelerated Formula: (and (< (mod v_main_~x~0_4 4294967296) 1024) (= v_main_~x~0_3 (+ v_main_~x~0_4 1)) (= v_main_~y~0_2 (+ v_main_~y~0_3 1))) InVars {main_~x~0=v_main_~x~0_4, main_~y~0=v_main_~y~0_3} OutVars{main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2, main_#t~post8=|v_main_#t~post8_1|, main_#t~post9=|v_main_#t~post9_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post8, main_#t~post9] with Formula: (let ((.cse0 (mod v_main_~x~0_4 4294967296))) (or (and (= |v_main_#t~post9_3| |v_main_#t~post9_1|) (= v_itFin_1 0) (= |v_main_#t~post8_3| |v_main_#t~post8_1|) (= v_main_~x~0_4 v_main_~x~0_3) (= v_main_~y~0_3 v_main_~y~0_2) (<= 1024 .cse0)) (let ((.cse1 (+ v_itFin_1 v_main_~x~0_4))) (and (= v_main_~y~0_2 (+ v_itFin_1 v_main_~y~0_3)) (<= 1024 (mod .cse1 4294967296)) (< 0 v_itFin_1) (< .cse0 1024) (<= (div (+ (* v_itFin_1 (- 1)) (* v_main_~x~0_4 (- 1)) 1024) (- 4294967296)) (+ (div (+ v_main_~x~0_4 (- 4294967295)) 4294967296) 1)) (= v_main_~x~0_3 .cse1))))) InVars {main_~y~0=v_main_~y~0_3, main_~x~0=v_main_~x~0_4, main_#t~post8=|v_main_#t~post8_3|, main_#t~post9=|v_main_#t~post9_3|} OutVars{main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_3, main_#t~post8=|v_main_#t~post8_1|, main_#t~post9=|v_main_#t~post9_1|} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_~y~0, main_#t~post8, main_#t~post9] [2021-05-02 17:54:37,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:54:37 BasicIcfg [2021-05-02 17:54:37,011 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 17:54:37,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 17:54:37,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 17:54:37,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 17:54:37,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 05:54:36" (1/4) ... [2021-05-02 17:54:37,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41880fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:54:37, skipping insertion in model container [2021-05-02 17:54:37,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:54:36" (2/4) ... [2021-05-02 17:54:37,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41880fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:54:37, skipping insertion in model container [2021-05-02 17:54:37,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:54:36" (3/4) ... [2021-05-02 17:54:37,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41880fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:54:37, skipping insertion in model container [2021-05-02 17:54:37,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:54:37" (4/4) ... [2021-05-02 17:54:37,026 INFO L111 eAbstractionObserver]: Analyzing ICFG multivar_1-2.cJordan [2021-05-02 17:54:37,030 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 17:54:37,032 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 17:54:37,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 17:54:37,054 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 17:54:37,054 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 17:54:37,054 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 17:54:37,055 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 17:54:37,055 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 17:54:37,055 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 17:54:37,055 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 17:54:37,055 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 17:54:37,063 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 17:54:37,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 17:54:37,068 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:37,069 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:37,069 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:37,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:37,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2021-05-02 17:54:37,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:37,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611293684] [2021-05-02 17:54:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:37,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:54:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:37,182 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 17:54:37,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:54:37,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611293684] [2021-05-02 17:54:37,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611293684] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:54:37,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:54:37,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 17:54:37,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882236483] [2021-05-02 17:54:37,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 17:54:37,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:54:37,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 17:54:37,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 17:54:37,195 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 17:54:37,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:54:37,246 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-05-02 17:54:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 17:54:37,247 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 17:54:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:54:37,252 INFO L225 Difference]: With dead ends: 18 [2021-05-02 17:54:37,252 INFO L226 Difference]: Without dead ends: 12 [2021-05-02 17:54:37,252 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 17:54:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-05-02 17:54:37,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-05-02 17:54:37,286 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 17:54:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-05-02 17:54:37,287 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-05-02 17:54:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:54:37,287 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-05-02 17:54:37,288 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 17:54:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-05-02 17:54:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 17:54:37,288 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:37,288 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:37,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 17:54:37,289 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:37,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2021-05-02 17:54:37,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:37,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007438194] [2021-05-02 17:54:37,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 17:54:37,328 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 17:54:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 17:54:37,356 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 17:54:37,381 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-02 17:54:37,382 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 17:54:37,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 17:54:37,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:54:37 BasicIcfg [2021-05-02 17:54:37,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 17:54:37,401 INFO L168 Benchmark]: Toolchain (without parser) took 1217.49 ms. Allocated memory is still 170.9 MB. Free memory was 134.7 MB in the beginning and 94.3 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.2 MB. Max. memory is 8.0 GB. [2021-05-02 17:54:37,402 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 170.9 MB. Free memory was 151.4 MB in the beginning and 151.4 MB in the end (delta: 72.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 17:54:37,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.03 ms. Allocated memory is still 170.9 MB. Free memory was 134.5 MB in the beginning and 151.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. [2021-05-02 17:54:37,405 INFO L168 Benchmark]: Boogie Preprocessor took 51.16 ms. Allocated memory is still 170.9 MB. Free memory was 151.7 MB in the beginning and 154.1 MB in the end (delta: -2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 17:54:37,405 INFO L168 Benchmark]: RCFGBuilder took 370.18 ms. Allocated memory is still 170.9 MB. Free memory was 154.1 MB in the beginning and 140.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 17:54:37,406 INFO L168 Benchmark]: IcfgTransformer took 257.12 ms. Allocated memory is still 170.9 MB. Free memory was 140.5 MB in the beginning and 123.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-02 17:54:37,408 INFO L168 Benchmark]: TraceAbstraction took 387.48 ms. Allocated memory is still 170.9 MB. Free memory was 122.7 MB in the beginning and 94.3 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-05-02 17:54:37,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {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 0.12 ms. Allocated memory is still 170.9 MB. Free memory was 151.4 MB in the beginning and 151.4 MB in the end (delta: 72.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 147.03 ms. Allocated memory is still 170.9 MB. Free memory was 134.5 MB in the beginning and 151.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.16 ms. Allocated memory is still 170.9 MB. Free memory was 151.7 MB in the beginning and 154.1 MB in the end (delta: -2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 370.18 ms. Allocated memory is still 170.9 MB. Free memory was 154.1 MB in the beginning and 140.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 257.12 ms. Allocated memory is still 170.9 MB. Free memory was 140.5 MB in the beginning and 123.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 387.48 ms. Allocated memory is still 170.9 MB. Free memory was 122.7 MB in the beginning and 94.3 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(); [L15] unsigned int y = x + 1; VAL [x=4294967295, y=0] [L17] COND FALSE !(x < 1024) VAL [x=4294967295, y=0] [L22] CALL __VERIFIER_assert(x == y) 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: 331.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.2ms, AutomataDifference: 66.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 9 SDslu, 3 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.5ms 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: 9.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.6ms SsaConstructionTime, 44.0ms SatisfiabilityAnalysisTime, 47.8ms 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...