/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -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-1a84f73 [2021-05-01 03:00:01,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 03:00:01,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 03:00:01,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 03:00:01,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 03:00:01,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 03:00:01,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 03:00:01,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 03:00:01,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 03:00:01,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 03:00:01,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 03:00:01,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 03:00:01,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 03:00:01,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 03:00:01,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 03:00:01,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 03:00:01,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 03:00:01,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 03:00:01,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 03:00:01,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 03:00:01,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 03:00:01,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 03:00:01,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 03:00:01,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 03:00:01,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 03:00:01,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-01 03:00:01,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-01 03:00:01,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-01 03:00:01,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-01 03:00:01,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-01 03:00:01,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-01 03:00:01,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-01 03:00:01,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-01 03:00:01,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 03:00:01,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 03:00:01,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 03:00:01,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-01 03:00:02,013 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 03:00:02,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 03:00:02,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 03:00:02,014 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 03:00:02,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 03:00:02,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 03:00:02,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 03:00:02,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 03:00:02,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 03:00:02,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 03:00:02,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 03:00:02,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 03:00:02,016 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 03:00:02,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 03:00:02,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 03:00:02,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 03:00:02,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 03:00:02,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 03:00:02,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 03:00:02,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 03:00:02,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-01 03:00:02,018 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-01 03:00:02,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 03:00:02,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 03:00:02,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 03:00:02,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 03:00:02,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 03:00:02,353 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 03:00:02,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex04.c [2021-05-01 03:00:02,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f53da34/4a0823212aa74538b3e8522b63f20bd9/FLAG750816921 [2021-05-01 03:00:02,915 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 03:00:02,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c [2021-05-01 03:00:02,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f53da34/4a0823212aa74538b3e8522b63f20bd9/FLAG750816921 [2021-05-01 03:00:03,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1f53da34/4a0823212aa74538b3e8522b63f20bd9 [2021-05-01 03:00:03,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 03:00:03,410 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-01 03:00:03,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 03:00:03,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 03:00:03,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 03:00:03,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:00:03" (1/1) ... [2021-05-01 03:00:03,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d54c88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03, skipping insertion in model container [2021-05-01 03:00:03,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:00:03" (1/1) ... [2021-05-01 03:00:03,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 03:00:03,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 03:00:03,547 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] [2021-05-01 03:00:03,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 03:00:03,573 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 03:00:03,586 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] [2021-05-01 03:00:03,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 03:00:03,625 INFO L208 MainTranslator]: Completed translation [2021-05-01 03:00:03,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03 WrapperNode [2021-05-01 03:00:03,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 03:00:03,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 03:00:03,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 03:00:03,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 03:00:03,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03" (1/1) ... [2021-05-01 03:00:03,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03" (1/1) ... [2021-05-01 03:00:03,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03" (1/1) ... [2021-05-01 03:00:03,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03" (1/1) ... [2021-05-01 03:00:03,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03" (1/1) ... [2021-05-01 03:00:03,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03" (1/1) ... [2021-05-01 03:00:03,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03" (1/1) ... [2021-05-01 03:00:03,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 03:00:03,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 03:00:03,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 03:00:03,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 03:00:03,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03" (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 [2021-05-01 03:00:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 03:00:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 03:00:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 03:00:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 03:00:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 03:00:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-05-01 03:00:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 03:00:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 03:00:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 03:00:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 03:00:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 03:00:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 03:00:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 03:00:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-01 03:00:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 03:00:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-05-01 03:00:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 03:00:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 03:00:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 03:00:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 03:00:03,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 03:00:03,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 03:00:03,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 03:00:04,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 03:00:04,132 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 03:00:04,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:00:04 BoogieIcfgContainer [2021-05-01 03:00:04,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 03:00:04,134 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-01 03:00:04,134 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-01 03:00:04,135 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-01 03:00:04,137 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:00:04" (1/1) ... [2021-05-01 03:00:04,190 INFO L142 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-05-01 03:00:04,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 03:00:04,208 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< 0 v_main_~x~0_7) InVars {main_~x~0=v_main_~x~0_7} OutVars{main_~x~0=v_main_~x~0_7} AuxVars[] AssignedVars[] [2021-05-01 03:00:04,252 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 83.3 percent of original size [2021-05-01 03:00:04,273 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:04,284 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:04,315 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:04,330 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:04,338 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:04,352 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 03:00:04,356 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 03:00:04,372 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:04,384 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:04,393 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:04,402 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:04,409 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:04,416 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 83.3 percent of original size 45 [2021-05-01 03:00:06,581 WARN L205 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-05-01 03:00:06,586 INFO L1111 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] with Formula: (or (let ((.cse0 (* v_itFin_1 v_main_~d~0_6))) (and (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)))) (< 0 v_main_~x~0_7) (= v_main_~x~0_7 (+ v_main_~x~0_6 .cse0)) (<= v_main_~x~0_7 .cse0))) (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] [2021-05-01 03:00:06,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:00:06 BasicIcfg [2021-05-01 03:00:06,596 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-01 03:00:06,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 03:00:06,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 03:00:06,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 03:00:06,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 03:00:03" (1/4) ... [2021-05-01 03:00:06,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e90bcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:00:06, skipping insertion in model container [2021-05-01 03:00:06,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:00:03" (2/4) ... [2021-05-01 03:00:06,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e90bcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:00:06, skipping insertion in model container [2021-05-01 03:00:06,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:00:04" (3/4) ... [2021-05-01 03:00:06,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e90bcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:00:06, skipping insertion in model container [2021-05-01 03:00:06,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:00:06" (4/4) ... [2021-05-01 03:00:06,604 INFO L111 eAbstractionObserver]: Analyzing ICFG trex04.cJordan [2021-05-01 03:00:06,609 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-01 03:00:06,613 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 03:00:06,630 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 03:00:06,647 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 03:00:06,648 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-01 03:00:06,648 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-01 03:00:06,648 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 03:00:06,648 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 03:00:06,648 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 03:00:06,648 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 03:00:06,648 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 03:00:06,661 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) [2021-05-01 03:00:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 03:00:06,667 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 03:00:06,668 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 03:00:06,668 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 03:00:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 03:00:06,673 INFO L82 PathProgramCache]: Analyzing trace with hash -86347346, now seen corresponding path program 1 times [2021-05-01 03:00:06,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 03:00:06,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908199499] [2021-05-01 03:00:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 03:00:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:00:06,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:06,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:00:06,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:06,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:00:06,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 03:00:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:00:06,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:06,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:00:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 03:00:06,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 03:00:06,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908199499] [2021-05-01 03:00:06,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908199499] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 03:00:06,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 03:00:06,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 03:00:06,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440055666] [2021-05-01 03:00:06,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 03:00:06,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 03:00:06,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 03:00:06,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 03:00:06,966 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) [2021-05-01 03:00:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 03:00:07,086 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-05-01 03:00:07,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 03:00:07,091 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 [2021-05-01 03:00:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 03:00:07,098 INFO L225 Difference]: With dead ends: 31 [2021-05-01 03:00:07,098 INFO L226 Difference]: Without dead ends: 25 [2021-05-01 03:00:07,101 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 03:00:07,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-01 03:00:07,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-01 03:00:07,133 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) [2021-05-01 03:00:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-05-01 03:00:07,137 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 17 [2021-05-01 03:00:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 03:00:07,138 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-05-01 03:00:07,138 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) [2021-05-01 03:00:07,138 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-05-01 03:00:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 03:00:07,140 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 03:00:07,140 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 03:00:07,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 03:00:07,141 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 03:00:07,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 03:00:07,142 INFO L82 PathProgramCache]: Analyzing trace with hash -85423825, now seen corresponding path program 1 times [2021-05-01 03:00:07,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 03:00:07,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641153867] [2021-05-01 03:00:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 03:00:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:00:07,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:07,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:00:07,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:07,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:00:07,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:07,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 03:00:07,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:07,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 03:00:07,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:07,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 03:00:07,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:07,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:00:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 03:00:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 03:00:07,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 03:00:07,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 03:00:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 03:00:07,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 03:00:07,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641153867] [2021-05-01 03:00:07,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641153867] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 03:00:07,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 03:00:07,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 03:00:07,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60767631] [2021-05-01 03:00:07,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 03:00:07,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 03:00:07,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 03:00:07,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-01 03:00:07,295 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) [2021-05-01 03:00:07,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 03:00:07,554 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2021-05-01 03:00:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-01 03:00:07,555 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 [2021-05-01 03:00:07,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 03:00:07,556 INFO L225 Difference]: With dead ends: 24 [2021-05-01 03:00:07,556 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 03:00:07,557 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 163.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-01 03:00:07,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 03:00:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 03:00:07,557 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) [2021-05-01 03:00:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 03:00:07,558 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-01 03:00:07,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 03:00:07,558 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 03:00:07,558 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) [2021-05-01 03:00:07,558 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 03:00:07,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 03:00:07,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 03:00:07,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:00:07 BasicIcfg [2021-05-01 03:00:07,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 03:00:07,564 INFO L168 Benchmark]: Toolchain (without parser) took 4153.38 ms. Allocated memory is still 209.7 MB. Free memory was 175.9 MB in the beginning and 143.8 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB. [2021-05-01 03:00:07,564 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 209.7 MB. Free memory is still 192.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 03:00:07,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.55 ms. Allocated memory is still 209.7 MB. Free memory was 175.7 MB in the beginning and 165.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 03:00:07,565 INFO L168 Benchmark]: Boogie Preprocessor took 75.74 ms. Allocated memory is still 209.7 MB. Free memory was 165.9 MB in the beginning and 193.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2021-05-01 03:00:07,566 INFO L168 Benchmark]: RCFGBuilder took 429.07 ms. Allocated memory is still 209.7 MB. Free memory was 193.3 MB in the beginning and 177.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-01 03:00:07,566 INFO L168 Benchmark]: IcfgTransformer took 2462.21 ms. Allocated memory is still 209.7 MB. Free memory was 177.0 MB in the beginning and 161.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-01 03:00:07,567 INFO L168 Benchmark]: TraceAbstraction took 965.27 ms. Allocated memory is still 209.7 MB. Free memory was 160.9 MB in the beginning and 143.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. [2021-05-01 03:00:07,569 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 0.13 ms. Allocated memory is still 209.7 MB. Free memory is still 192.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 211.55 ms. Allocated memory is still 209.7 MB. Free memory was 175.7 MB in the beginning and 165.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.74 ms. Allocated memory is still 209.7 MB. Free memory was 165.9 MB in the beginning and 193.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 429.07 ms. Allocated memory is still 209.7 MB. Free memory was 193.3 MB in the beginning and 177.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 2462.21 ms. Allocated memory is still 209.7 MB. Free memory was 177.0 MB in the beginning and 161.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 965.27 ms. Allocated memory is still 209.7 MB. Free memory was 160.9 MB in the beginning and 143.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.9 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: 914.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.9ms, AutomataDifference: 413.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59 SDtfs, 47 SDslu, 25 SDs, 0 SdLazy, 84 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 162.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 201.0ms 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: 23.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.4ms SsaConstructionTime, 74.9ms SatisfiabilityAnalysisTime, 249.1ms 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...