/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops/trex04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 16:58:10,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 16:58:10,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 16:58:10,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 16:58:10,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 16:58:10,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 16:58:10,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 16:58:10,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 16:58:10,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 16:58:10,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 16:58:10,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 16:58:10,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 16:58:10,548 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 16:58:10,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 16:58:10,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 16:58:10,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 16:58:10,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 16:58:10,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 16:58:10,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 16:58:10,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 16:58:10,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 16:58:10,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 16:58:10,575 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 16:58:10,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 16:58:10,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 16:58:10,577 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 16:58:10,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 16:58:10,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 16:58:10,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 16:58:10,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 16:58:10,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 16:58:10,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 16:58:10,578 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 16:58:10,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 16:58:10,578 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 16:58:10,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 16:58:10,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 16:58:10,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 16:58:10,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 16:58:10,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 16:58:10,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:58:10,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 16:58:10,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 16:58:10,580 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 16:58:10,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 16:58:10,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 16:58:10,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 16:58:10,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 16:58:10,797 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 16:58:10,797 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 16:58:10,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex04.c [2022-03-18 16:58:10,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8aef1b8c/2544cee597cf487199bb4bb233df69b7/FLAG47f0e15c6 [2022-03-18 16:58:11,129 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 16:58:11,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c [2022-03-18 16:58:11,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8aef1b8c/2544cee597cf487199bb4bb233df69b7/FLAG47f0e15c6 [2022-03-18 16:58:11,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8aef1b8c/2544cee597cf487199bb4bb233df69b7 [2022-03-18 16:58:11,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 16:58:11,578 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 16:58:11,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 16:58:11,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 16:58:11,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 16:58:11,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:58:11" (1/1) ... [2022-03-18 16:58:11,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df4ac69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11, skipping insertion in model container [2022-03-18 16:58:11,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:58:11" (1/1) ... [2022-03-18 16:58:11,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 16:58:11,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 16:58:11,744 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c[405,418] [2022-03-18 16:58:11,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:58:11,785 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 16:58:11,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c[405,418] [2022-03-18 16:58:11,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:58:11,815 INFO L208 MainTranslator]: Completed translation [2022-03-18 16:58:11,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11 WrapperNode [2022-03-18 16:58:11,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 16:58:11,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 16:58:11,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 16:58:11,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 16:58:11,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11" (1/1) ... [2022-03-18 16:58:11,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11" (1/1) ... [2022-03-18 16:58:11,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11" (1/1) ... [2022-03-18 16:58:11,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11" (1/1) ... [2022-03-18 16:58:11,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11" (1/1) ... [2022-03-18 16:58:11,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11" (1/1) ... [2022-03-18 16:58:11,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11" (1/1) ... [2022-03-18 16:58:11,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 16:58:11,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 16:58:11,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 16:58:11,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 16:58:11,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11" (1/1) ... [2022-03-18 16:58:11,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:58:11,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:58:11,880 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) [2022-03-18 16:58:11,897 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 [2022-03-18 16:58:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 16:58:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 16:58:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 16:58:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 16:58:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 16:58:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-18 16:58:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 16:58:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 16:58:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 16:58:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 16:58:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 16:58:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 16:58:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 16:58:11,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-03-18 16:58:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 16:58:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-18 16:58:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 16:58:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 16:58:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 16:58:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 16:58:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 16:58:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 16:58:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 16:58:11,966 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 16:58:11,967 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 16:58:12,144 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 16:58:12,148 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 16:58:12,149 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 16:58:12,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:58:12 BoogieIcfgContainer [2022-03-18 16:58:12,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 16:58:12,150 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 16:58:12,150 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 16:58:12,161 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 16:58:12,168 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:58:12" (1/1) ... [2022-03-18 16:58:12,304 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-18 16:58:12,430 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-18 16:58:12,431 INFO L91 elerationTransformer]: Accelerated Formula: (and (< 0 v_main_~x~0_7) (= (+ v_main_~x~0_7 (* (- 1) v_main_~d~0_6)) v_main_~x~0_6)) InVars {main_~x~0=v_main_~x~0_7, main_~d~0=v_main_~d~0_6} OutVars{main_~x~0=v_main_~x~0_6, main_~d~0=v_main_~d~0_6} AuxVars[] AssignedVars[main_~x~0] to Formula: (let ((.cse1 (= v_main_~x~0_7 v_main_~x~0_6))) (or (and (let ((.cse0 (= v_main_~d~0_6 0))) (or (and .cse0 .cse1) (let ((.cse2 (+ (* (- 1) v_main_~x~0_6) v_main_~x~0_7))) (and (not .cse0) (forall ((v_it_1 Int)) (or (< (* v_main_~d~0_6 v_it_1) v_main_~x~0_7) (not (<= 1 v_it_1)) (not (<= (+ v_it_1 1) (div (+ (* (- 1) v_main_~x~0_6) v_main_~x~0_7) v_main_~d~0_6))))) (= (mod .cse2 v_main_~d~0_6) 0) (< 0 (div .cse2 v_main_~d~0_6)))))) (< 0 v_main_~x~0_7)) (and .cse1 (<= v_main_~x~0_7 0)))) InVars {main_~x~0=v_main_~x~0_7, main_~d~0=v_main_~d~0_6} OutVars{main_~x~0=v_main_~x~0_6, main_~d~0=v_main_~d~0_6} AuxVars[] AssignedVars[main_~x~0] [2022-03-18 16:58:12,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 04:58:12 BasicIcfg [2022-03-18 16:58:12,437 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 16:58:12,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 16:58:12,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 16:58:12,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 16:58:12,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 04:58:11" (1/4) ... [2022-03-18 16:58:12,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57386e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:58:12, skipping insertion in model container [2022-03-18 16:58:12,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:58:11" (2/4) ... [2022-03-18 16:58:12,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57386e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:58:12, skipping insertion in model container [2022-03-18 16:58:12,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:58:12" (3/4) ... [2022-03-18 16:58:12,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57386e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 04:58:12, skipping insertion in model container [2022-03-18 16:58:12,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 04:58:12" (4/4) ... [2022-03-18 16:58:12,446 INFO L111 eAbstractionObserver]: Analyzing ICFG trex04.cJordan [2022-03-18 16:58:12,450 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 16:58:12,450 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 16:58:12,483 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 16:58:12,488 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 [2022-03-18 16:58:12,489 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 16:58:12,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.55) internal successors, (31), 24 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 16:58:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 16:58:12,502 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:58:12,503 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:58:12,503 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:58:12,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:58:12,506 INFO L85 PathProgramCache]: Analyzing trace with hash -86347346, now seen corresponding path program 1 times [2022-03-18 16:58:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:58:12,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740682206] [2022-03-18 16:58:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:58:12,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:58:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:58:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:58:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:58:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:58:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:58:12,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740682206] [2022-03-18 16:58:12,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740682206] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:58:12,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:58:12,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 16:58:12,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192071702] [2022-03-18 16:58:12,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:58:12,656 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 16:58:12,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:58:12,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 16:58:12,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 16:58:12,673 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.55) internal successors, (31), 24 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:58:12,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:58:12,702 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-03-18 16:58:12,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 16:58:12,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 16:58:12,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:58:12,707 INFO L225 Difference]: With dead ends: 31 [2022-03-18 16:58:12,707 INFO L226 Difference]: Without dead ends: 25 [2022-03-18 16:58:12,708 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 [2022-03-18 16:58:12,710 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 26 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 16:58:12,711 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 16:58:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-03-18 16:58:12,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-03-18 16:58:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 16:58:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-03-18 16:58:12,732 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 17 [2022-03-18 16:58:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:58:12,732 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-03-18 16:58:12,733 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:58:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-03-18 16:58:12,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 16:58:12,734 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:58:12,734 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:58:12,734 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 16:58:12,734 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:58:12,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:58:12,735 INFO L85 PathProgramCache]: Analyzing trace with hash -85423825, now seen corresponding path program 1 times [2022-03-18 16:58:12,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:58:12,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638181931] [2022-03-18 16:58:12,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:58:12,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:58:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:58:12,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:58:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:58:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:58:12,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:58:12,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638181931] [2022-03-18 16:58:12,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638181931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:58:12,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:58:12,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 16:58:12,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376125458] [2022-03-18 16:58:12,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:58:12,819 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 16:58:12,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:58:12,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 16:58:12,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 16:58:12,820 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:58:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:58:12,919 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2022-03-18 16:58:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 16:58:12,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 16:58:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:58:12,920 INFO L225 Difference]: With dead ends: 23 [2022-03-18 16:58:12,920 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 16:58:12,920 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-18 16:58:12,921 INFO L912 BasicCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:58:12,921 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 44 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 3 Unchecked, 0.1s Time] [2022-03-18 16:58:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 16:58:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 16:58:12,922 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) [2022-03-18 16:58:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 16:58:12,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-03-18 16:58:12,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:58:12,922 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 16:58:12,923 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:58:12,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 16:58:12,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 16:58:12,925 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 16:58:12,925 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 16:58:12,926 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-18 16:58:12,927 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 16:58:12,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 04:58:12 BasicIcfg [2022-03-18 16:58:12,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 16:58:12,946 INFO L158 Benchmark]: Toolchain (without parser) took 1368.40ms. Allocated memory was 197.1MB in the beginning and 291.5MB in the end (delta: 94.4MB). Free memory was 140.4MB in the beginning and 203.4MB in the end (delta: -63.0MB). Peak memory consumption was 31.1MB. Max. memory is 8.0GB. [2022-03-18 16:58:12,946 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 197.1MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 16:58:12,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.78ms. Allocated memory was 197.1MB in the beginning and 291.5MB in the end (delta: 94.4MB). Free memory was 140.2MB in the beginning and 263.1MB in the end (delta: -122.9MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. [2022-03-18 16:58:12,947 INFO L158 Benchmark]: Boogie Preprocessor took 34.55ms. Allocated memory is still 291.5MB. Free memory was 263.1MB in the beginning and 261.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 16:58:12,948 INFO L158 Benchmark]: RCFGBuilder took 298.02ms. Allocated memory is still 291.5MB. Free memory was 261.5MB in the beginning and 249.5MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 16:58:12,948 INFO L158 Benchmark]: IcfgTransformer took 286.83ms. Allocated memory is still 291.5MB. Free memory was 249.0MB in the beginning and 236.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-18 16:58:12,948 INFO L158 Benchmark]: TraceAbstraction took 505.96ms. Allocated memory is still 291.5MB. Free memory was 235.9MB in the beginning and 203.4MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-03-18 16:58:12,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 197.1MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 237.78ms. Allocated memory was 197.1MB in the beginning and 291.5MB in the end (delta: 94.4MB). Free memory was 140.2MB in the beginning and 263.1MB in the end (delta: -122.9MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.55ms. Allocated memory is still 291.5MB. Free memory was 263.1MB in the beginning and 261.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 298.02ms. Allocated memory is still 291.5MB. Free memory was 261.5MB in the beginning and 249.5MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 286.83ms. Allocated memory is still 291.5MB. Free memory was 249.0MB in the beginning and 236.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 505.96ms. Allocated memory is still 291.5MB. Free memory was 235.9MB in the beginning and 203.4MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. 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: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 63 mSDtfsCounter, 77 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 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! [2022-03-18 16:58:12,983 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...