/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/loops/trex04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 05:31:40,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 05:31:40,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 05:31:40,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 05:31:40,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 05:31:40,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 05:31:40,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 05:31:40,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 05:31:40,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 05:31:40,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 05:31:40,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 05:31:40,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 05:31:40,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 05:31:40,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 05:31:40,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 05:31:40,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 05:31:40,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 05:31:40,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 05:31:40,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 05:31:40,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 05:31:40,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 05:31:40,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 05:31:40,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 05:31:40,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 05:31:40,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 05:31:40,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 05:31:40,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 05:31:40,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 05:31:40,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 05:31:40,746 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 05:31:40,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 05:31:40,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 05:31:40,749 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 05:31:40,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 05:31:40,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 05:31:40,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 05:31:40,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 05:31:40,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 05:31:40,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 05:31:40,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 05:31:40,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 05:31:40,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 05:31:40,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 05:31:40,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 05:31:40,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 05:31:40,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 05:31:40,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 05:31:40,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 05:31:40,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 05:31:40,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 05:31:40,753 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 05:31:40,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 05:31:41,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 05:31:41,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 05:31:41,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 05:31:41,074 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 05:31:41,075 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 05:31:41,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex04.c [2021-05-06 05:31:41,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49c4dee04/e4fde15b996b496b9dcaa27caaccb408/FLAG6910873ef [2021-05-06 05:31:41,557 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 05:31:41,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c [2021-05-06 05:31:41,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49c4dee04/e4fde15b996b496b9dcaa27caaccb408/FLAG6910873ef [2021-05-06 05:31:41,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49c4dee04/e4fde15b996b496b9dcaa27caaccb408 [2021-05-06 05:31:41,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 05:31:41,954 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 05:31:41,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 05:31:41,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 05:31:41,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 05:31:41,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:31:41" (1/1) ... [2021-05-06 05:31:41,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbf7fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:41, skipping insertion in model container [2021-05-06 05:31:41,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:31:41" (1/1) ... [2021-05-06 05:31:41,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 05:31:41,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 05:31:42,074 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c[405,418] [2021-05-06 05:31:42,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:31:42,092 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 05:31:42,102 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c[405,418] [2021-05-06 05:31:42,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:31:42,119 INFO L208 MainTranslator]: Completed translation [2021-05-06 05:31:42,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:42 WrapperNode [2021-05-06 05:31:42,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 05:31:42,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 05:31:42,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 05:31:42,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 05:31:42,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:42" (1/1) ... [2021-05-06 05:31:42,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:42" (1/1) ... [2021-05-06 05:31:42,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:42" (1/1) ... [2021-05-06 05:31:42,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:42" (1/1) ... [2021-05-06 05:31:42,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:42" (1/1) ... [2021-05-06 05:31:42,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:42" (1/1) ... [2021-05-06 05:31:42,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:42" (1/1) ... [2021-05-06 05:31:42,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 05:31:42,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 05:31:42,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 05:31:42,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 05:31:42,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:42" (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 [2021-05-06 05:31:42,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 05:31:42,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 05:31:42,251 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 05:31:42,251 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 05:31:42,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 05:31:42,251 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-05-06 05:31:42,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 05:31:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 05:31:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 05:31:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 05:31:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 05:31:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 05:31:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 05:31:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-06 05:31:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 05:31:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-05-06 05:31:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 05:31:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 05:31:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 05:31:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 05:31:42,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 05:31:42,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 05:31:42,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 05:31:42,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 05:31:42,594 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 05:31:42,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:31:42 BoogieIcfgContainer [2021-05-06 05:31:42,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 05:31:42,596 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 05:31:42,596 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 05:31:42,597 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 05:31:42,599 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:31:42" (1/1) ... [2021-05-06 05:31:42,693 WARN L240 tifierPushTermWalker]: treesize reduction 8, result has 83.3 percent of original size [2021-05-06 05:31:42,748 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 05:31:42,774 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-06 05:31:42,801 WARN L245 tifierPushTermWalker]: treesize reduction 8, result has 83.3 percent of original size 40 [2021-05-06 05:31:42,854 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 05:31:42,855 INFO L91 elerationTransformer]: Accelerated Formula: (and (< 0 v_main_~x~0_7) (= v_main_~x~0_6 (+ v_main_~x~0_7 (* v_main_~d~0_6 (- 1))))) InVars {main_~x~0=v_main_~x~0_7, main_~d~0=v_main_~d~0_6} OutVars{main_~x~0=v_main_~x~0_6, main_~d~0=v_main_~d~0_6} AuxVars[] AssignedVars[main_~x~0] to Formula: (or (and (< 0 v_itFin_1) (< 0 v_main_~x~0_7) (forall ((v_it_1 Int)) (or (< (* v_it_1 v_main_~d~0_6) v_main_~x~0_7) (< v_itFin_1 (+ v_it_1 1)) (< v_it_1 1))) (= v_main_~x~0_7 (+ v_main_~x~0_6 (* v_itFin_1 v_main_~d~0_6)))) (and (= v_itFin_1 0) (<= v_main_~x~0_7 0) (= v_main_~x~0_7 v_main_~x~0_6))) InVars {main_~x~0=v_main_~x~0_7, main_~d~0=v_main_~d~0_6} OutVars{main_~x~0=v_main_~x~0_6, main_~d~0=v_main_~d~0_6} AuxVars[v_itFin_1] AssignedVars[main_~x~0] [2021-05-06 05:31:42,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:31:42 BasicIcfg [2021-05-06 05:31:42,865 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 05:31:42,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 05:31:42,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 05:31:42,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 05:31:42,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 05:31:41" (1/4) ... [2021-05-06 05:31:42,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a246b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:31:42, skipping insertion in model container [2021-05-06 05:31:42,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:31:42" (2/4) ... [2021-05-06 05:31:42,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a246b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:31:42, skipping insertion in model container [2021-05-06 05:31:42,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:31:42" (3/4) ... [2021-05-06 05:31:42,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a246b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:31:42, skipping insertion in model container [2021-05-06 05:31:42,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:31:42" (4/4) ... [2021-05-06 05:31:42,874 INFO L111 eAbstractionObserver]: Analyzing ICFG trex04.cJordan [2021-05-06 05:31:42,879 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 05:31:42,882 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 05:31:42,897 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 05:31:42,918 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 05:31:42,918 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 05:31:42,918 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 05:31:42,918 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 05:31:42,919 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 05:31:42,919 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 05:31:42,919 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 05:31:42,919 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 05:31:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.55) internal successors, (31), 24 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 05:31:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 05:31:42,938 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:42,938 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:31:42,939 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:42,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:42,943 INFO L82 PathProgramCache]: Analyzing trace with hash -86347346, now seen corresponding path program 1 times [2021-05-06 05:31:42,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:42,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789448446] [2021-05-06 05:31:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:43,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:43,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:43,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789448446] [2021-05-06 05:31:43,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789448446] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:31:43,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:31:43,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 05:31:43,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697461172] [2021-05-06 05:31:43,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 05:31:43,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:43,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 05:31:43,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 05:31:43,178 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.55) internal successors, (31), 24 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-05-06 05:31:43,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:43,264 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-05-06 05:31:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 05:31:43,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 17 [2021-05-06 05:31:43,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:43,271 INFO L225 Difference]: With dead ends: 31 [2021-05-06 05:31:43,271 INFO L226 Difference]: Without dead ends: 25 [2021-05-06 05:31:43,272 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 05:31:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-06 05:31:43,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-06 05:31:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:31:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-05-06 05:31:43,308 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 17 [2021-05-06 05:31:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:43,308 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-05-06 05:31:43,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-05-06 05:31:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-05-06 05:31:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 05:31:43,309 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:31:43,310 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:31:43,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 05:31:43,310 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:31:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:31:43,311 INFO L82 PathProgramCache]: Analyzing trace with hash -85423825, now seen corresponding path program 1 times [2021-05-06 05:31:43,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:31:43,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213653884] [2021-05-06 05:31:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:31:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:43,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:31:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:31:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:31:43,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:31:43,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213653884] [2021-05-06 05:31:43,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213653884] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:31:43,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:31:43,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 05:31:43,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213247546] [2021-05-06 05:31:43,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 05:31:43,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:31:43,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 05:31:43,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 05:31:43,427 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-05-06 05:31:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:31:43,621 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2021-05-06 05:31:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 05:31:43,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2021-05-06 05:31:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:31:43,622 INFO L225 Difference]: With dead ends: 23 [2021-05-06 05:31:43,622 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 05:31:43,623 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 134.9ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-06 05:31:43,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 05:31:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 05:31:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 05:31:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 05:31:43,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-06 05:31:43,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:31:43,624 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 05:31:43,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-05-06 05:31:43,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 05:31:43,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 05:31:43,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 05:31:43,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:31:43 BasicIcfg [2021-05-06 05:31:43,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 05:31:43,629 INFO L168 Benchmark]: Toolchain (without parser) took 1674.56 ms. Allocated memory is still 179.3 MB. Free memory was 144.7 MB in the beginning and 120.8 MB in the end (delta: 23.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:43,629 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 179.3 MB. Free memory is still 161.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 05:31:43,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.38 ms. Allocated memory is still 179.3 MB. Free memory was 144.4 MB in the beginning and 134.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:43,630 INFO L168 Benchmark]: Boogie Preprocessor took 57.46 ms. Allocated memory is still 179.3 MB. Free memory was 134.7 MB in the beginning and 163.1 MB in the end (delta: -28.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:43,630 INFO L168 Benchmark]: RCFGBuilder took 417.21 ms. Allocated memory is still 179.3 MB. Free memory was 163.1 MB in the beginning and 147.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:43,631 INFO L168 Benchmark]: IcfgTransformer took 269.33 ms. Allocated memory is still 179.3 MB. Free memory was 147.0 MB in the beginning and 135.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:43,631 INFO L168 Benchmark]: TraceAbstraction took 760.94 ms. Allocated memory is still 179.3 MB. Free memory was 134.8 MB in the beginning and 120.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. [2021-05-06 05:31:43,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 179.3 MB. Free memory is still 161.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 164.38 ms. Allocated memory is still 179.3 MB. Free memory was 144.4 MB in the beginning and 134.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.46 ms. Allocated memory is still 179.3 MB. Free memory was 134.7 MB in the beginning and 163.1 MB in the end (delta: -28.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 417.21 ms. Allocated memory is still 179.3 MB. Free memory was 163.1 MB in the beginning and 147.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 269.33 ms. Allocated memory is still 179.3 MB. Free memory was 147.0 MB in the beginning and 135.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 760.94 ms. Allocated memory is still 179.3 MB. Free memory was 134.8 MB in the beginning and 120.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 709.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.1ms, AutomataDifference: 304.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59 SDtfs, 47 SDslu, 25 SDs, 0 SdLazy, 79 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 135.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 181.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.5ms SsaConstructionTime, 42.1ms SatisfiabilityAnalysisTime, 215.4ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...