/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops/trex04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 17:49:59,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 17:49:59,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 17:49:59,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 17:49:59,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 17:49:59,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 17:49:59,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 17:49:59,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 17:49:59,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 17:49:59,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 17:49:59,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 17:49:59,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 17:49:59,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 17:49:59,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 17:49:59,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 17:49:59,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 17:49:59,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 17:49:59,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 17:49:59,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 17:49:59,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 17:49:59,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 17:49:59,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 17:49:59,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 17:49:59,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 17:49:59,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 17:49:59,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 17:49:59,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 17:49:59,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 17:49:59,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 17:49:59,714 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 17:49:59,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 17:49:59,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 17:49:59,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 17:49:59,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 17:49:59,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 17:49:59,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 17:49:59,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 17:49:59,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 17:49:59,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 17:49:59,719 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 17:49:59,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 17:49:59,719 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 17:49:59,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 17:49:59,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 17:49:59,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 17:49:59,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 17:49:59,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 17:49:59,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 17:49:59,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 17:49:59,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 17:49:59,722 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 17:49:59,722 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 17:50:00,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 17:50:00,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 17:50:00,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 17:50:00,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 17:50:00,076 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 17:50:00,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex04.c [2021-05-02 17:50:00,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ee214c7/5a2ce53d365b413f8add8f35c44b21d3/FLAG028de3477 [2021-05-02 17:50:00,856 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 17:50:00,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c [2021-05-02 17:50:00,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ee214c7/5a2ce53d365b413f8add8f35c44b21d3/FLAG028de3477 [2021-05-02 17:50:01,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ee214c7/5a2ce53d365b413f8add8f35c44b21d3 [2021-05-02 17:50:01,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 17:50:01,175 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 17:50:01,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 17:50:01,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 17:50:01,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 17:50:01,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:50:01" (1/1) ... [2021-05-02 17:50:01,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a486a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01, skipping insertion in model container [2021-05-02 17:50:01,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:50:01" (1/1) ... [2021-05-02 17:50:01,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 17:50:01,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 17:50:01,365 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] [2021-05-02 17:50:01,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:50:01,393 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 17:50:01,422 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] [2021-05-02 17:50:01,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:50:01,487 INFO L208 MainTranslator]: Completed translation [2021-05-02 17:50:01,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01 WrapperNode [2021-05-02 17:50:01,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 17:50:01,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 17:50:01,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 17:50:01,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 17:50:01,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01" (1/1) ... [2021-05-02 17:50:01,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01" (1/1) ... [2021-05-02 17:50:01,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01" (1/1) ... [2021-05-02 17:50:01,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01" (1/1) ... [2021-05-02 17:50:01,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01" (1/1) ... [2021-05-02 17:50:01,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01" (1/1) ... [2021-05-02 17:50:01,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01" (1/1) ... [2021-05-02 17:50:01,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 17:50:01,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 17:50:01,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 17:50:01,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 17:50:01,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 17:50:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 17:50:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 17:50:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 17:50:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 17:50:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 17:50:01,637 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-05-02 17:50:01,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 17:50:01,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 17:50:01,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 17:50:01,637 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 17:50:01,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 17:50:01,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 17:50:01,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 17:50:01,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-02 17:50:01,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 17:50:01,638 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-05-02 17:50:01,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 17:50:01,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 17:50:01,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 17:50:01,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 17:50:01,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 17:50:01,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 17:50:01,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 17:50:01,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 17:50:01,844 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 17:50:01,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:50:01 BoogieIcfgContainer [2021-05-02 17:50:01,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 17:50:01,846 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 17:50:01,846 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 17:50:01,847 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 17:50:01,850 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:50:01" (1/1) ... [2021-05-02 17:50:01,905 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[] [2021-05-02 17:50:01,946 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 83.3 percent of original size [2021-05-02 17:50:02,005 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 17:50:02,055 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-02 17:50:02,106 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 83.3 percent of original size 45 [2021-05-02 17:50:04,344 WARN L205 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-05-02 17:50:04,352 INFO L1112 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] [2021-05-02 17:50:04,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:50:04 BasicIcfg [2021-05-02 17:50:04,362 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 17:50:04,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 17:50:04,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 17:50:04,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 17:50:04,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 05:50:01" (1/4) ... [2021-05-02 17:50:04,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2bd12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:50:04, skipping insertion in model container [2021-05-02 17:50:04,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:50:01" (2/4) ... [2021-05-02 17:50:04,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2bd12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:50:04, skipping insertion in model container [2021-05-02 17:50:04,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:50:01" (3/4) ... [2021-05-02 17:50:04,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2bd12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:50:04, skipping insertion in model container [2021-05-02 17:50:04,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:50:04" (4/4) ... [2021-05-02 17:50:04,370 INFO L111 eAbstractionObserver]: Analyzing ICFG trex04.cJordan [2021-05-02 17:50:04,375 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 17:50:04,379 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 17:50:04,395 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 17:50:04,425 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 17:50:04,425 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 17:50:04,426 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 17:50:04,426 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 17:50:04,426 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 17:50:04,426 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 17:50:04,426 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 17:50:04,426 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 17:50:04,436 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) [2021-05-02 17:50:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 17:50:04,443 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:50:04,444 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:50:04,444 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:50:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:50:04,451 INFO L82 PathProgramCache]: Analyzing trace with hash -86347346, now seen corresponding path program 1 times [2021-05-02 17:50:04,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:50:04,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210862956] [2021-05-02 17:50:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:50:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:04,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:50:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 17:50:04,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:50:04,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210862956] [2021-05-02 17:50:04,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210862956] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:50:04,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:50:04,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 17:50:04,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687637458] [2021-05-02 17:50:04,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 17:50:04,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:50:04,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 17:50:04,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 17:50:04,750 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) [2021-05-02 17:50:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:50:04,837 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-05-02 17:50:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 17:50:04,839 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 [2021-05-02 17:50:04,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:50:04,844 INFO L225 Difference]: With dead ends: 31 [2021-05-02 17:50:04,845 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 17:50:04,847 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 17:50:04,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 17:50:04,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 17:50:04,878 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) [2021-05-02 17:50:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-05-02 17:50:04,881 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 17 [2021-05-02 17:50:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:50:04,882 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-05-02 17:50:04,882 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) [2021-05-02 17:50:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-05-02 17:50:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 17:50:04,884 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:50:04,884 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:50:04,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 17:50:04,884 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:50:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:50:04,885 INFO L82 PathProgramCache]: Analyzing trace with hash -85423825, now seen corresponding path program 1 times [2021-05-02 17:50:04,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:50:04,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638302014] [2021-05-02 17:50:04,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:50:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:05,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:50:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:50:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 17:50:05,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:50:05,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638302014] [2021-05-02 17:50:05,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638302014] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:50:05,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:50:05,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 17:50:05,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216349633] [2021-05-02 17:50:05,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 17:50:05,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:50:05,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 17:50:05,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 17:50:05,069 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) [2021-05-02 17:50:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:50:05,229 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2021-05-02 17:50:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 17:50:05,230 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 [2021-05-02 17:50:05,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:50:05,230 INFO L225 Difference]: With dead ends: 24 [2021-05-02 17:50:05,230 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 17:50:05,231 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 17:50:05,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 17:50:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 17:50:05,232 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 17:50:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 17:50:05,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-02 17:50:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:50:05,232 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 17:50:05,232 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) [2021-05-02 17:50:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 17:50:05,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 17:50:05,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 17:50:05,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:50:05 BasicIcfg [2021-05-02 17:50:05,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 17:50:05,237 INFO L168 Benchmark]: Toolchain (without parser) took 4062.29 ms. Allocated memory is still 189.8 MB. Free memory was 154.5 MB in the beginning and 125.0 MB in the end (delta: 29.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:05,238 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 189.8 MB. Free memory is still 171.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 17:50:05,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.94 ms. Allocated memory is still 189.8 MB. Free memory was 154.3 MB in the beginning and 172.7 MB in the end (delta: -18.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:05,238 INFO L168 Benchmark]: Boogie Preprocessor took 48.45 ms. Allocated memory is still 189.8 MB. Free memory was 172.7 MB in the beginning and 171.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:05,244 INFO L168 Benchmark]: RCFGBuilder took 307.32 ms. Allocated memory is still 189.8 MB. Free memory was 171.2 MB in the beginning and 155.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:05,245 INFO L168 Benchmark]: IcfgTransformer took 2515.95 ms. Allocated memory is still 189.8 MB. Free memory was 155.2 MB in the beginning and 139.8 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:05,246 INFO L168 Benchmark]: TraceAbstraction took 872.83 ms. Allocated memory is still 189.8 MB. Free memory was 139.1 MB in the beginning and 125.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 17:50:05,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 189.8 MB. Free memory is still 171.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 310.94 ms. Allocated memory is still 189.8 MB. Free memory was 154.3 MB in the beginning and 172.7 MB in the end (delta: -18.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.45 ms. Allocated memory is still 189.8 MB. Free memory was 172.7 MB in the beginning and 171.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 307.32 ms. Allocated memory is still 189.8 MB. Free memory was 171.2 MB in the beginning and 155.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 2515.95 ms. Allocated memory is still 189.8 MB. Free memory was 155.2 MB in the beginning and 139.8 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 872.83 ms. Allocated memory is still 189.8 MB. Free memory was 139.1 MB in the beginning and 125.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 15.7 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: 810.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.8ms, AutomataDifference: 271.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59 SDtfs, 47 SDslu, 25 SDs, 0 SdLazy, 84 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 124.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 147.2ms 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: 22.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.2ms SsaConstructionTime, 90.4ms SatisfiabilityAnalysisTime, 264.5ms 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...