/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invariants/eq2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:47:47,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:47:47,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:47:47,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:47:47,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:47:47,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:47:47,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:47:47,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:47:47,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:47:47,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:47:47,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:47:47,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:47:47,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:47:47,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:47:47,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:47:47,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:47:47,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:47:47,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:47:47,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:47:47,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:47:47,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:47:47,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:47:47,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:47:47,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:47:47,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:47:47,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:47:47,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:47:47,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:47:47,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:47:47,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:47:47,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:47:47,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:47:47,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:47:47,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:47:47,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:47:47,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:47:47,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:47:47,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:47:47,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:47:47,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:47:47,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:47:47,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:47:47,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:47:47,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:47:47,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:47:47,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:47:47,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:47:47,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:47:47,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:47:47,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:47:47,452 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:47:47,452 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:47:47,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:47:47,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:47:47,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:47:47,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:47:47,728 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:47:47,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq2.c [2021-05-06 06:47:47,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffa443eb8/0b303ecc801c4d0d8928b63111e845d2/FLAG3c025ab97 [2021-05-06 06:47:48,158 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:47:48,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq2.c [2021-05-06 06:47:48,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffa443eb8/0b303ecc801c4d0d8928b63111e845d2/FLAG3c025ab97 [2021-05-06 06:47:48,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffa443eb8/0b303ecc801c4d0d8928b63111e845d2 [2021-05-06 06:47:48,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:47:48,568 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:47:48,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:47:48,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:47:48,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:47:48,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:47:48" (1/1) ... [2021-05-06 06:47:48,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7692a07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48, skipping insertion in model container [2021-05-06 06:47:48,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:47:48" (1/1) ... [2021-05-06 06:47:48,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:47:48,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:47:48,682 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq2.c[364,377] [2021-05-06 06:47:48,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:47:48,701 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:47:48,710 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq2.c[364,377] [2021-05-06 06:47:48,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:47:48,723 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:47:48,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48 WrapperNode [2021-05-06 06:47:48,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:47:48,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:47:48,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:47:48,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:47:48,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48" (1/1) ... [2021-05-06 06:47:48,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48" (1/1) ... [2021-05-06 06:47:48,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48" (1/1) ... [2021-05-06 06:47:48,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48" (1/1) ... [2021-05-06 06:47:48,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48" (1/1) ... [2021-05-06 06:47:48,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48" (1/1) ... [2021-05-06 06:47:48,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48" (1/1) ... [2021-05-06 06:47:48,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:47:48,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:47:48,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:47:48,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:47:48,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:47:48,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:47:48,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:47:48,848 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:47:48,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:47:48,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:47:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:47:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:47:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:47:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:47:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-06 06:47:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:47:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:47:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:47:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:47:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:47:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:47:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:47:48,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:47:49,062 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:47:49,062 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 06:47:49,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:47:49 BoogieIcfgContainer [2021-05-06 06:47:49,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:47:49,064 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:47:49,064 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:47:49,064 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:47:49,066 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:47:49" (1/1) ... [2021-05-06 06:47:49,113 WARN L240 tifierPushTermWalker]: treesize reduction 2, result has 96.9 percent of original size [2021-05-06 06:47:49,134 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 06:47:49,145 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-06 06:47:49,176 WARN L245 tifierPushTermWalker]: treesize reduction 2, result has 96.9 percent of original size 62 [2021-05-06 06:47:49,201 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:47:49,202 INFO L91 elerationTransformer]: Accelerated Formula: (and (not (= (mod |v_main_#t~nondet8_4| 4294967296) 0)) (= v_main_~y~0_2 (+ v_main_~y~0_3 1)) (= (+ v_main_~z~0_3 1) v_main_~z~0_2)) InVars {main_~z~0=v_main_~z~0_3, main_~y~0=v_main_~y~0_3, main_#t~nondet8=|v_main_#t~nondet8_4|} OutVars{main_#t~post10=|v_main_#t~post10_1|, main_~z~0=v_main_~z~0_2, main_~y~0=v_main_~y~0_2, main_#t~post9=|v_main_#t~post9_1|, main_#t~nondet8=|v_main_#t~nondet8_3|} AuxVars[] AssignedVars[main_#t~post10, main_~z~0, main_~y~0, main_#t~post9, main_#t~nondet8] to Formula: (let ((.cse0 (= (mod |v_main_#t~nondet8_4| 4294967296) 0))) (or (and (= |v_main_#t~post9_3| |v_main_#t~post9_1|) (= v_itFin_1 0) (= v_main_~z~0_3 v_main_~z~0_2) .cse0 (= |v_main_#t~nondet8_4| |v_main_#t~nondet8_3|) (= |v_main_#t~post10_3| |v_main_#t~post10_1|) (= v_main_~y~0_3 v_main_~y~0_2)) (and (not .cse0) (= v_main_~y~0_2 (+ v_itFin_1 v_main_~y~0_3)) (< 0 v_itFin_1) (= v_main_~z~0_2 (+ v_itFin_1 v_main_~z~0_3))))) InVars {main_~y~0=v_main_~y~0_3, main_#t~post10=|v_main_#t~post10_3|, main_#t~nondet8=|v_main_#t~nondet8_4|, main_#t~post9=|v_main_#t~post9_3|, main_~z~0=v_main_~z~0_3} OutVars{main_~y~0=v_main_~y~0_2, main_#t~post10=|v_main_#t~post10_1|, main_#t~post9=|v_main_#t~post9_1|, main_#t~nondet8=|v_main_#t~nondet8_3|, main_~z~0=v_main_~z~0_2} AuxVars[v_itFin_1] AssignedVars[main_#t~post10, main_~z~0, main_~y~0, main_#t~post9, main_#t~nondet8] [2021-05-06 06:47:49,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:47:49 BasicIcfg [2021-05-06 06:47:49,206 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:47:49,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:47:49,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:47:49,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:47:49,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:47:48" (1/4) ... [2021-05-06 06:47:49,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f028295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:47:49, skipping insertion in model container [2021-05-06 06:47:49,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:47:48" (2/4) ... [2021-05-06 06:47:49,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f028295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:47:49, skipping insertion in model container [2021-05-06 06:47:49,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:47:49" (3/4) ... [2021-05-06 06:47:49,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f028295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:47:49, skipping insertion in model container [2021-05-06 06:47:49,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:47:49" (4/4) ... [2021-05-06 06:47:49,211 INFO L111 eAbstractionObserver]: Analyzing ICFG eq2.cJordan [2021-05-06 06:47:49,214 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:47:49,216 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:47:49,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:47:49,239 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:47:49,239 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:47:49,239 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:47:49,239 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:47:49,239 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:47:49,239 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:47:49,239 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:47:49,239 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:47:49,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 06:47:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 06:47:49,252 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:47:49,252 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:47:49,253 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:47:49,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:47:49,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1088827777, now seen corresponding path program 1 times [2021-05-06 06:47:49,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:47:49,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810382756] [2021-05-06 06:47:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:47:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:47:49,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:47:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:47:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:47:49,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:47:49,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810382756] [2021-05-06 06:47:49,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810382756] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:47:49,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:47:49,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:47:49,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925360380] [2021-05-06 06:47:49,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:47:49,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:47:49,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:47:49,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:47:49,468 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2021-05-06 06:47:49,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:47:49,543 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-05-06 06:47:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:47:49,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 [2021-05-06 06:47:49,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:47:49,549 INFO L225 Difference]: With dead ends: 19 [2021-05-06 06:47:49,549 INFO L226 Difference]: Without dead ends: 12 [2021-05-06 06:47:49,550 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:47:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-05-06 06:47:49,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-05-06 06:47:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:47:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-05-06 06:47:49,568 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-05-06 06:47:49,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:47:49,569 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-05-06 06:47:49,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2021-05-06 06:47:49,569 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-05-06 06:47:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 06:47:49,569 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:47:49,569 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:47:49,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:47:49,570 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:47:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:47:49,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1087904256, now seen corresponding path program 1 times [2021-05-06 06:47:49,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:47:49,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552332721] [2021-05-06 06:47:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:47:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:47:49,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:47:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:47:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:47:49,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:47:49,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552332721] [2021-05-06 06:47:49,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552332721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:47:49,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:47:49,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 06:47:49,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060359941] [2021-05-06 06:47:49,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 06:47:49,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:47:49,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 06:47:49,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:47:49,781 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) 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) [2021-05-06 06:47:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:47:49,861 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-05-06 06:47:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:47:49,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) 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 [2021-05-06 06:47:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:47:49,862 INFO L225 Difference]: With dead ends: 10 [2021-05-06 06:47:49,862 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:47:49,863 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-06 06:47:49,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:47:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:47:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 06:47:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:47:49,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-05-06 06:47:49,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:47:49,863 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:47:49,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.1666666666666667) 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) [2021-05-06 06:47:49,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:47:49,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:47:49,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:47:49,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:47:49 BasicIcfg [2021-05-06 06:47:49,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:47:49,867 INFO L168 Benchmark]: Toolchain (without parser) took 1298.85 ms. Allocated memory is still 221.2 MB. Free memory was 187.6 MB in the beginning and 171.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2021-05-06 06:47:49,867 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 221.2 MB. Free memory is still 204.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:47:49,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.76 ms. Allocated memory is still 221.2 MB. Free memory was 187.4 MB in the beginning and 178.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:47:49,868 INFO L168 Benchmark]: Boogie Preprocessor took 55.05 ms. Allocated memory is still 221.2 MB. Free memory was 178.0 MB in the beginning and 204.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:47:49,869 INFO L168 Benchmark]: RCFGBuilder took 281.52 ms. Allocated memory is still 221.2 MB. Free memory was 204.8 MB in the beginning and 191.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:47:49,869 INFO L168 Benchmark]: IcfgTransformer took 142.11 ms. Allocated memory is still 221.2 MB. Free memory was 191.4 MB in the beginning and 175.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:47:49,869 INFO L168 Benchmark]: TraceAbstraction took 659.48 ms. Allocated memory is still 221.2 MB. Free memory was 175.2 MB in the beginning and 171.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:47:49,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 3 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 221.2 MB. Free memory is still 204.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 152.76 ms. Allocated memory is still 221.2 MB. Free memory was 187.4 MB in the beginning and 178.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.05 ms. Allocated memory is still 221.2 MB. Free memory was 178.0 MB in the beginning and 204.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 281.52 ms. Allocated memory is still 221.2 MB. Free memory was 204.8 MB in the beginning and 191.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 142.11 ms. Allocated memory is still 221.2 MB. Free memory was 191.4 MB in the beginning and 175.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 659.48 ms. Allocated memory is still 221.2 MB. Free memory was 175.2 MB in the beginning and 171.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 627.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.5ms, AutomataDifference: 178.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 14 SDslu, 19 SDs, 0 SdLazy, 19 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 158.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: 10.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.6ms SsaConstructionTime, 55.5ms SatisfiabilityAnalysisTime, 274.2ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 166 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...