/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/benchmark35_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 19:09:47,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 19:09:47,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 19:09:47,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 19:09:47,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 19:09:47,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 19:09:47,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 19:09:47,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 19:09:47,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 19:09:47,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 19:09:47,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 19:09:47,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 19:09:47,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 19:09:47,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 19:09:47,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 19:09:47,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 19:09:47,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 19:09:47,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 19:09:47,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 19:09:47,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 19:09:47,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 19:09:47,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 19:09:47,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 19:09:47,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 19:09:47,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 19:09:47,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 19:09:47,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 19:09:47,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 19:09:47,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 19:09:47,514 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 19:09:47,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 19:09:47,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 19:09:47,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 19:09:47,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 19:09:47,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 19:09:47,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 19:09:47,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 19:09:47,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 19:09:47,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 19:09:47,530 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 19:09:47,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 19:09:47,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 19:09:47,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 19:09:47,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 19:09:47,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 19:09:47,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 19:09:47,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 19:09:47,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 19:09:47,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 19:09:47,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 19:09:47,534 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 19:09:47,534 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 19:09:47,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 19:09:47,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 19:09:47,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 19:09:47,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 19:09:47,867 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 19:09:47,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark35_linear.i [2021-05-02 19:09:47,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0232776/7cf56f2ce73c4571991c49560235fa8b/FLAGf9cf9955e [2021-05-02 19:09:48,409 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 19:09:48,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark35_linear.i [2021-05-02 19:09:48,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0232776/7cf56f2ce73c4571991c49560235fa8b/FLAGf9cf9955e [2021-05-02 19:09:48,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0232776/7cf56f2ce73c4571991c49560235fa8b [2021-05-02 19:09:48,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 19:09:48,900 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 19:09:48,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 19:09:48,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 19:09:48,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 19:09:48,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:09:48" (1/1) ... [2021-05-02 19:09:48,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458cfb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:48, skipping insertion in model container [2021-05-02 19:09:48,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 07:09:48" (1/1) ... [2021-05-02 19:09:48,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 19:09:48,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 19:09:49,032 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/benchmark35_linear.i[868,881] [2021-05-02 19:09:49,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:09:49,046 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 19:09:49,093 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/benchmark35_linear.i[868,881] [2021-05-02 19:09:49,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 19:09:49,107 INFO L208 MainTranslator]: Completed translation [2021-05-02 19:09:49,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:49 WrapperNode [2021-05-02 19:09:49,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 19:09:49,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 19:09:49,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 19:09:49,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 19:09:49,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:49" (1/1) ... [2021-05-02 19:09:49,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:49" (1/1) ... [2021-05-02 19:09:49,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:49" (1/1) ... [2021-05-02 19:09:49,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:49" (1/1) ... [2021-05-02 19:09:49,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:49" (1/1) ... [2021-05-02 19:09:49,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:49" (1/1) ... [2021-05-02 19:09:49,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:49" (1/1) ... [2021-05-02 19:09:49,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 19:09:49,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 19:09:49,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 19:09:49,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 19:09:49,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:49" (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 19:09:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 19:09:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 19:09:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 19:09:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 19:09:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 19:09:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 19:09:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 19:09:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 19:09:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 19:09:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 19:09:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 19:09:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-02 19:09:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 19:09:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 19:09:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 19:09:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 19:09:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 19:09:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 19:09:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 19:09:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 19:09:49,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 19:09:49,494 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 19:09:49,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:09:49 BoogieIcfgContainer [2021-05-02 19:09:49,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 19:09:49,496 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 19:09:49,496 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 19:09:49,497 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 19:09:49,499 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:09:49" (1/1) ... [2021-05-02 19:09:49,583 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~x~0_3 10) (<= 0 v_main_~x~0_3)) InVars {main_~x~0=v_main_~x~0_3} OutVars{main_~x~0=v_main_~x~0_3} AuxVars[] AssignedVars[] [2021-05-02 19:09:49,621 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 91.2 percent of original size [2021-05-02 19:09:49,713 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 19:09:49,760 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-02 19:09:49,811 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 91.2 percent of original size 62 [2021-05-02 19:09:49,896 INFO L1112 elerationTransformer]: Accelerated Formula: (and (< v_main_~x~0_3 10) (= v_main_~x~0_2 (+ v_main_~x~0_3 1)) (<= 0 v_main_~x~0_3)) InVars {main_~x~0=v_main_~x~0_3} OutVars{main_~x~0=v_main_~x~0_2} AuxVars[] AssignedVars[main_~x~0] with Formula: (or (let ((.cse0 (+ v_itFin_1 v_main_~x~0_3))) (and (= v_main_~x~0_2 .cse0) (<= 10 .cse0) (< 0 v_itFin_1) (<= 0 v_main_~x~0_3) (< .cse0 11))) (and (= v_main_~x~0_3 v_main_~x~0_2) (= v_itFin_1 0) (or (< v_main_~x~0_3 0) (<= 10 v_main_~x~0_3)))) InVars {main_~x~0=v_main_~x~0_3} OutVars{main_~x~0=v_main_~x~0_2} AuxVars[v_itFin_1] AssignedVars[main_~x~0] [2021-05-02 19:09:49,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:09:49 BasicIcfg [2021-05-02 19:09:49,912 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 19:09:49,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 19:09:49,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 19:09:49,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 19:09:49,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 07:09:48" (1/4) ... [2021-05-02 19:09:49,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e00f505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:09:49, skipping insertion in model container [2021-05-02 19:09:49,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 07:09:49" (2/4) ... [2021-05-02 19:09:49,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e00f505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 07:09:49, skipping insertion in model container [2021-05-02 19:09:49,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 07:09:49" (3/4) ... [2021-05-02 19:09:49,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e00f505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:09:49, skipping insertion in model container [2021-05-02 19:09:49,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 07:09:49" (4/4) ... [2021-05-02 19:09:49,922 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark35_linear.iJordan [2021-05-02 19:09:49,927 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 19:09:49,934 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 19:09:49,949 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 19:09:49,975 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 19:09:49,975 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 19:09:49,975 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 19:09:49,976 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 19:09:49,976 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 19:09:49,976 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 19:09:49,976 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 19:09:49,976 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 19:09:49,988 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) [2021-05-02 19:09:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 19:09:49,994 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:49,995 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:49,995 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:49,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:50,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2021-05-02 19:09:50,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:50,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238217888] [2021-05-02 19:09:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:50,137 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 19:09:50,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:50,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238217888] [2021-05-02 19:09:50,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238217888] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:09:50,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:09:50,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 19:09:50,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483001151] [2021-05-02 19:09:50,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 19:09:50,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:50,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 19:09:50,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 19:09:50,160 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) [2021-05-02 19:09:50,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:50,217 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-02 19:09:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 19:09:50,219 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 [2021-05-02 19:09:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:50,228 INFO L225 Difference]: With dead ends: 20 [2021-05-02 19:09:50,228 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 19:09:50,229 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 19:09:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 19:09:50,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 19:09:50,255 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) [2021-05-02 19:09:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 19:09:50,258 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-05-02 19:09:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:50,258 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 19:09:50,258 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) [2021-05-02 19:09:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 19:09:50,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 19:09:50,259 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:09:50,260 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:09:50,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 19:09:50,260 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:09:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:09:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2021-05-02 19:09:50,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:09:50,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671950295] [2021-05-02 19:09:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:09:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:09:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:09:50,395 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 19:09:50,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:09:50,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671950295] [2021-05-02 19:09:50,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671950295] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 19:09:50,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 19:09:50,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 19:09:50,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436336511] [2021-05-02 19:09:50,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 19:09:50,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:09:50,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 19:09:50,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 19:09:50,399 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) [2021-05-02 19:09:50,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:09:50,548 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-05-02 19:09:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 19:09:50,549 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 [2021-05-02 19:09:50,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:09:50,550 INFO L225 Difference]: With dead ends: 12 [2021-05-02 19:09:50,550 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 19:09:50,551 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-05-02 19:09:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 19:09:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 19:09:50,551 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) [2021-05-02 19:09:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 19:09:50,551 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-02 19:09:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:09:50,552 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 19:09:50,552 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) [2021-05-02 19:09:50,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 19:09:50,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 19:09:50,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 19:09:50,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 07:09:50 BasicIcfg [2021-05-02 19:09:50,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 19:09:50,561 INFO L168 Benchmark]: Toolchain (without parser) took 1660.06 ms. Allocated memory is still 178.3 MB. Free memory was 143.0 MB in the beginning and 129.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:50,562 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 178.3 MB. Free memory was 159.9 MB in the beginning and 159.8 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 19:09:50,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.45 ms. Allocated memory is still 178.3 MB. Free memory was 142.8 MB in the beginning and 161.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:50,571 INFO L168 Benchmark]: Boogie Preprocessor took 33.42 ms. Allocated memory is still 178.3 MB. Free memory was 161.6 MB in the beginning and 160.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:50,572 INFO L168 Benchmark]: RCFGBuilder took 349.68 ms. Allocated memory is still 178.3 MB. Free memory was 160.3 MB in the beginning and 147.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:50,572 INFO L168 Benchmark]: IcfgTransformer took 415.80 ms. Allocated memory is still 178.3 MB. Free memory was 147.0 MB in the beginning and 127.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-05-02 19:09:50,573 INFO L168 Benchmark]: TraceAbstraction took 646.10 ms. Allocated memory is still 178.3 MB. Free memory was 127.4 MB in the beginning and 129.9 MB in the end (delta: -2.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 19:09:50,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 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 0.15 ms. Allocated memory is still 178.3 MB. Free memory was 159.9 MB in the beginning and 159.8 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 207.45 ms. Allocated memory is still 178.3 MB. Free memory was 142.8 MB in the beginning and 161.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.42 ms. Allocated memory is still 178.3 MB. Free memory was 161.6 MB in the beginning and 160.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 349.68 ms. Allocated memory is still 178.3 MB. Free memory was 160.3 MB in the beginning and 147.0 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 415.80 ms. Allocated memory is still 178.3 MB. Free memory was 147.0 MB in the beginning and 127.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 646.10 ms. Allocated memory is still 178.3 MB. Free memory was 127.4 MB in the beginning and 129.9 MB in the end (delta: -2.4 MB). There was no memory consumed. 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: 583.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.3ms, AutomataDifference: 236.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 18 SDslu, 19 SDs, 0 SdLazy, 30 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 155.0ms 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: 15.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.7ms SsaConstructionTime, 46.9ms SatisfiabilityAnalysisTime, 144.3ms 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...