/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-zilu/benchmark33_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:52:46,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:52:46,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:52:46,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:52:46,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:52:46,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:52:46,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:52:46,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:52:46,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:52:46,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:52:46,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:52:46,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:52:46,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:52:46,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:52:46,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:52:46,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:52:46,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:52:46,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:52:46,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:52:46,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:52:46,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:52:46,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:52:46,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:52:46,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:52:46,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:52:46,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:52:46,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:52:46,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:52:46,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:52:46,602 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:52:46,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:52:46,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:52:46,603 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:52:46,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:52:46,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:52:46,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:52:46,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:52:46,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:52:46,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:52:46,604 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:52:46,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:52:46,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:52:46,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:52:46,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:52:46,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:52:46,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:52:46,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:52:46,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:52:46,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:52:46,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:52:46,606 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:52:46,606 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:52:46,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:52:46,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:52:46,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:52:46,844 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:52:46,845 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:52:46,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark33_linear.i [2021-05-06 06:52:46,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7bba0bfd/48a5e2b013be4d9e9d92f80cd11fd332/FLAGe0511ce5c [2021-05-06 06:52:47,228 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:52:47,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark33_linear.i [2021-05-06 06:52:47,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7bba0bfd/48a5e2b013be4d9e9d92f80cd11fd332/FLAGe0511ce5c [2021-05-06 06:52:47,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7bba0bfd/48a5e2b013be4d9e9d92f80cd11fd332 [2021-05-06 06:52:47,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:52:47,662 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:52:47,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:52:47,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:52:47,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:52:47,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:52:47" (1/1) ... [2021-05-06 06:52:47,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5e5aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47, skipping insertion in model container [2021-05-06 06:52:47,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:52:47" (1/1) ... [2021-05-06 06:52:47,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:52:47,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:52:47,772 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-zilu/benchmark33_linear.i[868,881] [2021-05-06 06:52:47,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:52:47,783 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:52:47,791 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-zilu/benchmark33_linear.i[868,881] [2021-05-06 06:52:47,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:52:47,801 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:52:47,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47 WrapperNode [2021-05-06 06:52:47,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:52:47,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:52:47,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:52:47,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:52:47,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47" (1/1) ... [2021-05-06 06:52:47,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47" (1/1) ... [2021-05-06 06:52:47,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47" (1/1) ... [2021-05-06 06:52:47,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47" (1/1) ... [2021-05-06 06:52:47,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47" (1/1) ... [2021-05-06 06:52:47,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47" (1/1) ... [2021-05-06 06:52:47,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47" (1/1) ... [2021-05-06 06:52:47,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:52:47,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:52:47,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:52:47,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:52:47,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47" (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 06:52:47,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:52:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:52:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:52:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:52:47,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:52:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:52:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 06:52:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 06:52:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:52:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:52:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:52:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-06 06:52:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:52:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:52:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:52:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:52:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:52:47,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:52:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:52:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:52:48,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:52:48,131 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 06:52:48,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:48 BoogieIcfgContainer [2021-05-06 06:52:48,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:52:48,137 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:52:48,137 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:52:48,137 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:52:48,139 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:48" (1/1) ... [2021-05-06 06:52:48,213 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.1 percent of original size [2021-05-06 06:52:48,288 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 06:52:48,303 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-06 06:52:48,328 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.1 percent of original size 54 [2021-05-06 06:52:48,376 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:52:48,377 INFO L91 elerationTransformer]: Accelerated Formula: (and (<= 0 v_main_~x~0_3) (< v_main_~x~0_3 100) (= (+ v_main_~x~0_3 1) v_main_~x~0_2)) InVars {main_~x~0=v_main_~x~0_3} OutVars{main_~x~0=v_main_~x~0_2, main_#t~post4=|v_main_#t~post4_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post4] to Formula: (or (and (= v_main_~x~0_3 v_main_~x~0_2) (= v_itFin_1 0) (= |v_main_#t~post4_3| |v_main_#t~post4_1|) (or (< v_main_~x~0_3 0) (<= 100 v_main_~x~0_3))) (let ((.cse0 (+ v_itFin_1 v_main_~x~0_3))) (and (= v_main_~x~0_2 .cse0) (< 0 v_itFin_1) (<= 0 v_main_~x~0_3) (< .cse0 101)))) InVars {main_~x~0=v_main_~x~0_3, main_#t~post4=|v_main_#t~post4_3|} OutVars{main_~x~0=v_main_~x~0_2, main_#t~post4=|v_main_#t~post4_1|} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_#t~post4] [2021-05-06 06:52:48,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:52:48 BasicIcfg [2021-05-06 06:52:48,381 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:52:48,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:52:48,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:52:48,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:52:48,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:52:47" (1/4) ... [2021-05-06 06:52:48,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592b3436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:52:48, skipping insertion in model container [2021-05-06 06:52:48,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:47" (2/4) ... [2021-05-06 06:52:48,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592b3436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:52:48, skipping insertion in model container [2021-05-06 06:52:48,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:48" (3/4) ... [2021-05-06 06:52:48,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592b3436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:52:48, skipping insertion in model container [2021-05-06 06:52:48,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:52:48" (4/4) ... [2021-05-06 06:52:48,395 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark33_linear.iJordan [2021-05-06 06:52:48,399 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:52:48,403 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:52:48,415 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:52:48,433 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:52:48,433 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:52:48,434 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:52:48,434 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:52:48,434 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:52:48,434 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:52:48,434 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:52:48,434 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:52:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-05-06 06:52:48,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:52:48,451 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:48,451 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:48,451 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:48,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2021-05-06 06:52:48,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:48,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257979230] [2021-05-06 06:52:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:48,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:48,601 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 06:52:48,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:48,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257979230] [2021-05-06 06:52:48,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257979230] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:52:48,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:52:48,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:52:48,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219156244] [2021-05-06 06:52:48,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:52:48,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:48,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:52:48,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:52:48,619 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 06:52:48,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:48,662 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-06 06:52:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:52:48,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2021-05-06 06:52:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:48,669 INFO L225 Difference]: With dead ends: 20 [2021-05-06 06:52:48,669 INFO L226 Difference]: Without dead ends: 13 [2021-05-06 06:52:48,670 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:52:48,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-06 06:52:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-06 06:52:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-06 06:52:48,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-05-06 06:52:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:48,690 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-06 06:52:48,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 06:52:48,690 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-06 06:52:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:52:48,690 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:48,690 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:48,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:52:48,691 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:48,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2021-05-06 06:52:48,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:48,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248215729] [2021-05-06 06:52:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:48,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:48,820 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 06:52:48,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:48,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248215729] [2021-05-06 06:52:48,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248215729] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:52:48,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:52:48,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 06:52:48,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524403642] [2021-05-06 06:52:48,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 06:52:48,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:48,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 06:52:48,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-06 06:52:48,824 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 06:52:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:48,950 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-05-06 06:52:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 06:52:48,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 12 [2021-05-06 06:52:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:48,950 INFO L225 Difference]: With dead ends: 11 [2021-05-06 06:52:48,950 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:52:48,951 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-06 06:52:48,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:52:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:52:48,952 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 06:52:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:52:48,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-06 06:52:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:48,952 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:52:48,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 06:52:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:52:48,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:52:48,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 06:52:48,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:52:48 BasicIcfg [2021-05-06 06:52:48,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:52:48,958 INFO L168 Benchmark]: Toolchain (without parser) took 1295.23 ms. Allocated memory is still 181.4 MB. Free memory was 146.0 MB in the beginning and 81.0 MB in the end (delta: 65.0 MB). Peak memory consumption was 64.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:48,958 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 181.4 MB. Free memory is still 163.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:52:48,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.95 ms. Allocated memory is still 181.4 MB. Free memory was 145.9 MB in the beginning and 136.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:48,959 INFO L168 Benchmark]: Boogie Preprocessor took 56.98 ms. Allocated memory is still 181.4 MB. Free memory was 136.6 MB in the beginning and 165.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:48,959 INFO L168 Benchmark]: RCFGBuilder took 276.19 ms. Allocated memory is still 181.4 MB. Free memory was 165.2 MB in the beginning and 151.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:48,959 INFO L168 Benchmark]: IcfgTransformer took 244.16 ms. Allocated memory is still 181.4 MB. Free memory was 151.3 MB in the beginning and 132.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:48,960 INFO L168 Benchmark]: TraceAbstraction took 574.88 ms. Allocated memory is still 181.4 MB. Free memory was 132.4 MB in the beginning and 81.0 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:48,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 181.4 MB. Free memory is still 163.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 137.95 ms. Allocated memory is still 181.4 MB. Free memory was 145.9 MB in the beginning and 136.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.98 ms. Allocated memory is still 181.4 MB. Free memory was 136.6 MB in the beginning and 165.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 276.19 ms. Allocated memory is still 181.4 MB. Free memory was 165.2 MB in the beginning and 151.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 244.16 ms. Allocated memory is still 181.4 MB. Free memory was 151.3 MB in the beginning and 132.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 574.88 ms. Allocated memory is still 181.4 MB. Free memory was 132.4 MB in the beginning and 81.0 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 522.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.1ms, AutomataDifference: 190.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 18 SDslu, 19 SDs, 0 SdLazy, 25 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 141.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.8ms SsaConstructionTime, 43.4ms SatisfiabilityAnalysisTime, 186.3ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 82 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...