/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-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 15:02:04,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 15:02:04,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 15:02:04,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-17 15:02:04,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 15:02:04,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 15:02:04,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 15:02:04,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 15:02:04,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 15:02:04,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 15:02:04,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 15:02:04,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 15:02:04,541 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 15:02:04,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 15:02:04,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 15:02:04,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 15:02:04,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 15:02:04,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 15:02:04,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 15:02:04,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 15:02:04,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 15:02:04,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 15:02:04,562 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 15:02:04,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 15:02:04,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 15:02:04,563 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 15:02:04,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 15:02:04,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 15:02:04,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 15:02:04,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 15:02:04,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 15:02:04,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 15:02:04,565 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 15:02:04,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 15:02:04,565 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 15:02:04,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 15:02:04,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 15:02:04,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 15:02:04,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 15:02:04,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 15:02:04,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:02:04,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 15:02:04,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 15:02:04,566 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 15:02:04,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 15:02:04,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 15:02:04,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 15:02:04,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 15:02:04,763 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 15:02:04,763 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 15:02:04,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2022-03-17 15:02:04,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93e162f4/ccc5aebd05114cdf9b2d5b92eeac8a84/FLAGd281af2ec [2022-03-17 15:02:05,139 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 15:02:05,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2022-03-17 15:02:05,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93e162f4/ccc5aebd05114cdf9b2d5b92eeac8a84/FLAGd281af2ec [2022-03-17 15:02:05,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93e162f4/ccc5aebd05114cdf9b2d5b92eeac8a84 [2022-03-17 15:02:05,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 15:02:05,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 15:02:05,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 15:02:05,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 15:02:05,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 15:02:05,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e88fdbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05, skipping insertion in model container [2022-03-17 15:02:05,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 15:02:05,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 15:02:05,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i[895,908] [2022-03-17 15:02:05,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:02:05,315 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 15:02:05,324 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i[895,908] [2022-03-17 15:02:05,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:02:05,338 INFO L208 MainTranslator]: Completed translation [2022-03-17 15:02:05,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05 WrapperNode [2022-03-17 15:02:05,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 15:02:05,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 15:02:05,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 15:02:05,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 15:02:05,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 15:02:05,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 15:02:05,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 15:02:05,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 15:02:05,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:02:05,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:02:05,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 15:02:05,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 15:02:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 15:02:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 15:02:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 15:02:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 15:02:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 15:02:05,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 15:02:05,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 15:02:05,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 15:02:05,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-17 15:02:05,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-17 15:02:05,428 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 15:02:05,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 15:02:05,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 15:02:05,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 15:02:05,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 15:02:05,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 15:02:05,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 15:02:05,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 15:02:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 15:02:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 15:02:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 15:02:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 15:02:05,490 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 15:02:05,491 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 15:02:05,571 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 15:02:05,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 15:02:05,574 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 15:02:05,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:02:05 BoogieIcfgContainer [2022-03-17 15:02:05,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 15:02:05,576 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 15:02:05,576 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 15:02:05,577 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 15:02:05,582 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:02:05" (1/1) ... [2022-03-17 15:02:05,723 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-03-17 15:02:05,724 INFO L91 elerationTransformer]: Accelerated Formula: (and (= (+ v_main_~x~0_3 1) v_main_~x~0_4) (not (= v_main_~x~0_4 0)) (= v_main_~y~0_4 (+ v_main_~y~0_3 1))) InVars {main_~x~0=v_main_~x~0_4, main_~y~0=v_main_~y~0_4} OutVars{main_~x~0=v_main_~x~0_3, main_#t~post4=|v_main_#t~post4_1|, main_~y~0=v_main_~y~0_3, main_#t~post3=|v_main_#t~post3_1|} AuxVars[] AssignedVars[main_~x~0, main_#t~post4, main_~y~0, main_#t~post3] to Formula: (let ((.cse0 (= v_main_~x~0_4 0))) (or (and (= v_main_~x~0_4 v_main_~x~0_3) (= v_main_~y~0_4 v_main_~y~0_3) (= |v_main_#t~post3_3| |v_main_#t~post3_1|) .cse0 (= |v_main_#t~post4_3| |v_main_#t~post4_1|)) (and (or (not (<= (+ v_main_~x~0_3 1) 0)) (not (<= 1 v_main_~x~0_4))) (not .cse0) (= v_main_~y~0_3 (+ v_main_~x~0_3 v_main_~y~0_4 (* (- 1) v_main_~x~0_4))) (< v_main_~x~0_3 v_main_~x~0_4)))) InVars {main_#t~post4=|v_main_#t~post4_3|, main_~y~0=v_main_~y~0_4, main_#t~post3=|v_main_#t~post3_3|, main_~x~0=v_main_~x~0_4} OutVars{main_#t~post4=|v_main_#t~post4_1|, main_~y~0=v_main_~y~0_3, main_#t~post3=|v_main_#t~post3_1|, main_~x~0=v_main_~x~0_3} AuxVars[] AssignedVars[main_~x~0, main_#t~post4, main_~y~0, main_#t~post3] [2022-03-17 15:02:05,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:02:05 BasicIcfg [2022-03-17 15:02:05,728 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 15:02:05,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 15:02:05,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 15:02:05,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 15:02:05,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:02:05" (1/4) ... [2022-03-17 15:02:05,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec01d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:02:05, skipping insertion in model container [2022-03-17 15:02:05,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:02:05" (2/4) ... [2022-03-17 15:02:05,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec01d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:02:05, skipping insertion in model container [2022-03-17 15:02:05,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:02:05" (3/4) ... [2022-03-17 15:02:05,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec01d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 03:02:05, skipping insertion in model container [2022-03-17 15:02:05,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:02:05" (4/4) ... [2022-03-17 15:02:05,733 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.iJordan [2022-03-17 15:02:05,736 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 15:02:05,736 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 15:02:05,759 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 15:02:05,763 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 15:02:05,763 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 15:02:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-03-17 15:02:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 15:02:05,775 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:02:05,776 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:02:05,776 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:02:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:02:05,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1752834070, now seen corresponding path program 1 times [2022-03-17 15:02:05,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:02:05,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108320294] [2022-03-17 15:02:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:02:05,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:02:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:02:05,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:02:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:02:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:02:05,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:02:05,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108320294] [2022-03-17 15:02:05,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108320294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:02:05,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:02:05,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 15:02:05,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523598884] [2022-03-17 15:02:05,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:02:05,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 15:02:05,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:02:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 15:02:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 15:02:05,892 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 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 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-03-17 15:02:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:02:05,916 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-03-17 15:02:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 15:02:05,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 13 [2022-03-17 15:02:05,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:02:05,923 INFO L225 Difference]: With dead ends: 21 [2022-03-17 15:02:05,923 INFO L226 Difference]: Without dead ends: 14 [2022-03-17 15:02:05,924 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 15:02:05,932 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:02:05,933 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:02:05,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-17 15:02:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-17 15:02:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-03-17 15:02:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-17 15:02:05,953 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2022-03-17 15:02:05,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:02:05,954 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-17 15:02:05,955 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-03-17 15:02:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-17 15:02:05,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 15:02:05,955 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:02:05,955 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:02:05,955 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 15:02:05,956 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:02:05,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:02:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1781463221, now seen corresponding path program 1 times [2022-03-17 15:02:05,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:02:05,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623387922] [2022-03-17 15:02:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:02:05,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:02:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:02:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:02:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:02:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:02:06,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:02:06,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623387922] [2022-03-17 15:02:06,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623387922] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:02:06,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:02:06,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 15:02:06,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059562354] [2022-03-17 15:02:06,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:02:06,116 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 15:02:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:02:06,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 15:02:06,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-17 15:02:06,117 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-03-17 15:02:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:02:06,211 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-03-17 15:02:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 15:02:06,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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 13 [2022-03-17 15:02:06,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:02:06,213 INFO L225 Difference]: With dead ends: 19 [2022-03-17 15:02:06,213 INFO L226 Difference]: Without dead ends: 15 [2022-03-17 15:02:06,218 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-17 15:02:06,219 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:02:06,219 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 32 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:02:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-17 15:02:06,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-17 15:02:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-03-17 15:02:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-17 15:02:06,226 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-03-17 15:02:06,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:02:06,227 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-17 15:02:06,227 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-03-17 15:02:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-17 15:02:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-17 15:02:06,239 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:02:06,239 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:02:06,240 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 15:02:06,240 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:02:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:02:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash 219122817, now seen corresponding path program 1 times [2022-03-17 15:02:06,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:02:06,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048569477] [2022-03-17 15:02:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:02:06,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:02:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:02:06,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:02:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:02:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:02:06,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:02:06,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048569477] [2022-03-17 15:02:06,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048569477] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 15:02:06,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177395862] [2022-03-17 15:02:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:02:06,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:02:06,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:02:06,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:02:06,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 15:02:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:02:06,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-17 15:02:06,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:02:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:02:06,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:02:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:02:06,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177395862] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:02:06,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-17 15:02:06,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-03-17 15:02:06,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581002058] [2022-03-17 15:02:06,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-17 15:02:06,705 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-17 15:02:06,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:02:06,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-17 15:02:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-03-17 15:02:06,706 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:02:06,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:02:06,874 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-03-17 15:02:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 15:02:06,875 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-17 15:02:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:02:06,875 INFO L225 Difference]: With dead ends: 13 [2022-03-17 15:02:06,875 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 15:02:06,875 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2022-03-17 15:02:06,876 INFO L912 BasicCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:02:06,876 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 50 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:02:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 15:02:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 15:02:06,877 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) [2022-03-17 15:02:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 15:02:06,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-03-17 15:02:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:02:06,877 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 15:02:06,877 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:02:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 15:02:06,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 15:02:06,879 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 15:02:06,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 15:02:07,080 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:02:07,082 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-17 15:02:07,083 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 15:02:07,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 03:02:07 BasicIcfg [2022-03-17 15:02:07,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 15:02:07,085 INFO L158 Benchmark]: Toolchain (without parser) took 1930.51ms. Allocated memory was 196.1MB in the beginning and 251.7MB in the end (delta: 55.6MB). Free memory was 148.2MB in the beginning and 165.8MB in the end (delta: -17.7MB). Peak memory consumption was 38.6MB. Max. memory is 8.0GB. [2022-03-17 15:02:07,085 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 196.1MB. Free memory was 164.5MB in the beginning and 164.3MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 15:02:07,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.15ms. Allocated memory is still 196.1MB. Free memory was 148.0MB in the beginning and 173.3MB in the end (delta: -25.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-17 15:02:07,086 INFO L158 Benchmark]: Boogie Preprocessor took 31.46ms. Allocated memory is still 196.1MB. Free memory was 173.3MB in the beginning and 171.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 15:02:07,086 INFO L158 Benchmark]: RCFGBuilder took 204.46ms. Allocated memory is still 196.1MB. Free memory was 171.9MB in the beginning and 161.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-17 15:02:07,086 INFO L158 Benchmark]: IcfgTransformer took 152.07ms. Allocated memory is still 196.1MB. Free memory was 161.9MB in the beginning and 155.0MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-03-17 15:02:07,086 INFO L158 Benchmark]: TraceAbstraction took 1355.42ms. Allocated memory was 196.1MB in the beginning and 251.7MB in the end (delta: 55.6MB). Free memory was 154.6MB in the beginning and 165.8MB in the end (delta: -11.3MB). Peak memory consumption was 45.4MB. Max. memory is 8.0GB. [2022-03-17 15:02:07,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 2 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 0.09ms. Allocated memory is still 196.1MB. Free memory was 164.5MB in the beginning and 164.3MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.15ms. Allocated memory is still 196.1MB. Free memory was 148.0MB in the beginning and 173.3MB in the end (delta: -25.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.46ms. Allocated memory is still 196.1MB. Free memory was 173.3MB in the beginning and 171.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 204.46ms. Allocated memory is still 196.1MB. Free memory was 171.9MB in the beginning and 161.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 152.07ms. Allocated memory is still 196.1MB. Free memory was 161.9MB in the beginning and 155.0MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1355.42ms. Allocated memory was 196.1MB in the beginning and 251.7MB in the end (delta: 55.6MB). Free memory was 154.6MB in the beginning and 165.8MB in the end (delta: -11.3MB). Peak memory consumption was 45.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 107 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 67 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 40 mSDtfsCounter, 96 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 353 SizeOfPredicates, 8 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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! [2022-03-17 15:02:07,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...