/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/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 17:49:19,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 17:49:19,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 17:49:19,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 17:49:19,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 17:49:19,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 17:49:19,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 17:49:19,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 17:49:19,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 17:49:19,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 17:49:19,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 17:49:19,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 17:49:19,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 17:49:19,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 17:49:19,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 17:49:19,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 17:49:19,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 17:49:19,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 17:49:19,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 17:49:19,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 17:49:19,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 17:49:19,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 17:49:19,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 17:49:19,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 17:49:19,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 17:49:19,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 17:49:19,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 17:49:19,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 17:49:19,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 17:49:19,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 17:49:19,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 17:49:19,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 17:49:19,765 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 17:49:19,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 17:49:19,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 17:49:19,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 17:49:19,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 17:49:19,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 17:49:19,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 17:49:19,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 17:49:19,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 17:49:19,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 17:49:19,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 17:49:19,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 17:49:19,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 17:49:19,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 17:49:19,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 17:49:19,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 17:49:19,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 17:49:19,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 17:49:19,769 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 17:49:19,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 17:49:20,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 17:49:20,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 17:49:20,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 17:49:20,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 17:49:20,080 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 17:49:20,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2021-05-02 17:49:20,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff27b5c4/7e1810af95cd4c62b557e6fa2e6f6d14/FLAG62abf3daf [2021-05-02 17:49:20,616 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 17:49:20,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2021-05-02 17:49:20,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff27b5c4/7e1810af95cd4c62b557e6fa2e6f6d14/FLAG62abf3daf [2021-05-02 17:49:20,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff27b5c4/7e1810af95cd4c62b557e6fa2e6f6d14 [2021-05-02 17:49:20,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 17:49:20,662 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 17:49:20,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 17:49:20,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 17:49:20,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 17:49:20,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:49:20" (1/1) ... [2021-05-02 17:49:20,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7443e727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20, skipping insertion in model container [2021-05-02 17:49:20,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:49:20" (1/1) ... [2021-05-02 17:49:20,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 17:49:20,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 17:49:20,831 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/terminator_03-1.c[327,340] [2021-05-02 17:49:20,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:49:20,852 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 17:49:20,863 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/terminator_03-1.c[327,340] [2021-05-02 17:49:20,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:49:20,880 INFO L208 MainTranslator]: Completed translation [2021-05-02 17:49:20,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20 WrapperNode [2021-05-02 17:49:20,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 17:49:20,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 17:49:20,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 17:49:20,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 17:49:20,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20" (1/1) ... [2021-05-02 17:49:20,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20" (1/1) ... [2021-05-02 17:49:20,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20" (1/1) ... [2021-05-02 17:49:20,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20" (1/1) ... [2021-05-02 17:49:20,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20" (1/1) ... [2021-05-02 17:49:20,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20" (1/1) ... [2021-05-02 17:49:20,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20" (1/1) ... [2021-05-02 17:49:20,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 17:49:20,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 17:49:20,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 17:49:20,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 17:49:20,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20" (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 17:49:21,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 17:49:21,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 17:49:21,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 17:49:21,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 17:49:21,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 17:49:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 17:49:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 17:49:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 17:49:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 17:49:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 17:49:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 17:49:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 17:49:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 17:49:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 17:49:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 17:49:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 17:49:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 17:49:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 17:49:21,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 17:49:21,329 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 17:49:21,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:49:21 BoogieIcfgContainer [2021-05-02 17:49:21,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 17:49:21,331 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 17:49:21,331 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 17:49:21,332 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 17:49:21,334 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:49:21" (1/1) ... [2021-05-02 17:49:21,413 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~x~0_5 100) InVars {main_~x~0=v_main_~x~0_5} OutVars{main_~x~0=v_main_~x~0_5} AuxVars[] AssignedVars[] [2021-05-02 17:49:21,443 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.5 percent of original size [2021-05-02 17:49:21,549 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 17:49:21,563 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-02 17:49:21,583 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.5 percent of original size 49 [2021-05-02 17:49:21,741 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-05-02 17:49:21,744 INFO L1112 elerationTransformer]: Accelerated Formula: (and (< v_main_~x~0_5 100) (= v_main_~x~0_4 (+ v_main_~y~0_5 v_main_~x~0_5))) InVars {main_~x~0=v_main_~x~0_5, main_~y~0=v_main_~y~0_5} OutVars{main_~x~0=v_main_~x~0_4, main_~y~0=v_main_~y~0_5} AuxVars[] AssignedVars[main_~x~0] with Formula: (or (and (= v_itFin_1 0) (<= 100 v_main_~x~0_5) (= v_main_~x~0_5 v_main_~x~0_4)) (let ((.cse0 (+ (* v_itFin_1 v_main_~y~0_5) v_main_~x~0_5))) (and (< v_main_~x~0_5 100) (forall ((v_it_1 Int)) (or (< v_itFin_1 (+ v_it_1 1)) (< (+ (* v_it_1 v_main_~y~0_5) v_main_~x~0_5) 100))) (<= 100 .cse0) (= v_main_~x~0_4 .cse0)))) InVars {main_~x~0=v_main_~x~0_5, main_~y~0=v_main_~y~0_5} OutVars{main_~x~0=v_main_~x~0_4, main_~y~0=v_main_~y~0_5} AuxVars[v_itFin_1] AssignedVars[main_~x~0] [2021-05-02 17:49:21,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:49:21 BasicIcfg [2021-05-02 17:49:21,760 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 17:49:21,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 17:49:21,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 17:49:21,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 17:49:21,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 05:49:20" (1/4) ... [2021-05-02 17:49:21,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c20e84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:49:21, skipping insertion in model container [2021-05-02 17:49:21,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:49:20" (2/4) ... [2021-05-02 17:49:21,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c20e84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:49:21, skipping insertion in model container [2021-05-02 17:49:21,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:49:21" (3/4) ... [2021-05-02 17:49:21,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c20e84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:49:21, skipping insertion in model container [2021-05-02 17:49:21,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:49:21" (4/4) ... [2021-05-02 17:49:21,767 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-1.cJordan [2021-05-02 17:49:21,790 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 17:49:21,794 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 17:49:21,825 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 17:49:21,842 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 17:49:21,842 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 17:49:21,842 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 17:49:21,842 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 17:49:21,842 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 17:49:21,843 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 17:49:21,843 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 17:49:21,843 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 17:49:21,854 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 17:49:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 17:49:21,860 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:49:21,860 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:49:21,861 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:49:21,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:49:21,867 INFO L82 PathProgramCache]: Analyzing trace with hash -153385852, now seen corresponding path program 1 times [2021-05-02 17:49:21,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:49:21,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004507453] [2021-05-02 17:49:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:49:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:49:22,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:49:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:49:22,135 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 17:49:22,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:49:22,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004507453] [2021-05-02 17:49:22,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004507453] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:49:22,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:49:22,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 17:49:22,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008024020] [2021-05-02 17:49:22,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 17:49:22,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:49:22,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 17:49:22,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 17:49:22,157 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 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 17:49:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:49:22,436 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-05-02 17:49:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 17:49:22,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 11 [2021-05-02 17:49:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:49:22,445 INFO L225 Difference]: With dead ends: 28 [2021-05-02 17:49:22,446 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 17:49:22,447 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 230.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 17:49:22,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 17:49:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 17:49:22,470 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 17:49:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 17:49:22,471 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-02 17:49:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:49:22,472 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 17:49:22,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 17:49:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 17:49:22,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 17:49:22,473 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:49:22,473 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:49:22,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 17:49:22,474 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:49:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:49:22,475 INFO L82 PathProgramCache]: Analyzing trace with hash -490531812, now seen corresponding path program 1 times [2021-05-02 17:49:22,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:49:22,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918306179] [2021-05-02 17:49:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:49:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 17:49:22,508 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 17:49:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 17:49:22,522 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 17:49:22,539 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-02 17:49:22,540 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 17:49:22,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 17:49:22,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:49:22 BasicIcfg [2021-05-02 17:49:22,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 17:49:22,560 INFO L168 Benchmark]: Toolchain (without parser) took 1897.64 ms. Allocated memory is still 177.2 MB. Free memory was 143.1 MB in the beginning and 126.8 MB in the end (delta: 16.3 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2021-05-02 17:49:22,560 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 177.2 MB. Free memory is still 159.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 17:49:22,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.96 ms. Allocated memory is still 177.2 MB. Free memory was 142.9 MB in the beginning and 133.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 17:49:22,561 INFO L168 Benchmark]: Boogie Preprocessor took 78.23 ms. Allocated memory is still 177.2 MB. Free memory was 133.7 MB in the beginning and 161.8 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. [2021-05-02 17:49:22,562 INFO L168 Benchmark]: RCFGBuilder took 350.79 ms. Allocated memory is still 177.2 MB. Free memory was 161.8 MB in the beginning and 148.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-02 17:49:22,562 INFO L168 Benchmark]: IcfgTransformer took 428.91 ms. Allocated memory is still 177.2 MB. Free memory was 148.9 MB in the beginning and 133.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 17:49:22,563 INFO L168 Benchmark]: TraceAbstraction took 797.10 ms. Allocated memory is still 177.2 MB. Free memory was 133.4 MB in the beginning and 126.8 MB in the end (delta: 6.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2021-05-02 17:49:22,565 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 177.2 MB. Free memory is still 159.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 214.96 ms. Allocated memory is still 177.2 MB. Free memory was 142.9 MB in the beginning and 133.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.23 ms. Allocated memory is still 177.2 MB. Free memory was 133.7 MB in the beginning and 161.8 MB in the end (delta: -28.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 350.79 ms. Allocated memory is still 177.2 MB. Free memory was 161.8 MB in the beginning and 148.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * IcfgTransformer took 428.91 ms. Allocated memory is still 177.2 MB. Free memory was 148.9 MB in the beginning and 133.8 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 797.10 ms. Allocated memory is still 177.2 MB. Free memory was 133.4 MB in the beginning and 126.8 MB in the end (delta: 6.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x=__VERIFIER_nondet_int(); [L16] int y=__VERIFIER_nondet_int(); [L18] COND TRUE y>0 VAL [x=100, y=6] [L20] COND FALSE !(x<100) VAL [x=100, y=6] [L25] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 701.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.2ms, AutomataDifference: 305.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 25 SDslu, 23 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 230.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.9ms SsaConstructionTime, 50.6ms SatisfiabilityAnalysisTime, 172.6ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...