/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-acceleration/simple_3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 00:24:18,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 00:24:18,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 00:24:18,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 00:24:18,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 00:24:18,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 00:24:18,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 00:24:18,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 00:24:18,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 00:24:18,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 00:24:18,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 00:24:18,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 00:24:18,689 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 00:24:18,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 00:24:18,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 00:24:18,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 00:24:18,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 00:24:18,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 00:24:18,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 00:24:18,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 00:24:18,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 00:24:18,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 00:24:18,724 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 00:24:18,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 00:24:18,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 00:24:18,726 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 00:24:18,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 00:24:18,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 00:24:18,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 00:24:18,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 00:24:18,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 00:24:18,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 00:24:18,726 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 00:24:18,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 00:24:18,726 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 00:24:18,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 00:24:18,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 00:24:18,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 00:24:18,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 00:24:18,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 00:24:18,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 00:24:18,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 00:24:18,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 00:24:18,728 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 00:24:18,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 00:24:18,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 00:24:18,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 00:24:18,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 00:24:18,927 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 00:24:18,928 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 00:24:18,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2022-04-05 00:24:18,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c23143feb/882921eed2ca49dd900170a4df0b18f2/FLAGe7186eadd [2022-04-05 00:24:19,329 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 00:24:19,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2022-04-05 00:24:19,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c23143feb/882921eed2ca49dd900170a4df0b18f2/FLAGe7186eadd [2022-04-05 00:24:19,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c23143feb/882921eed2ca49dd900170a4df0b18f2 [2022-04-05 00:24:19,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 00:24:19,811 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 00:24:19,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 00:24:19,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 00:24:19,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 00:24:19,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 12:24:19" (1/1) ... [2022-04-05 00:24:19,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1305ade6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:19, skipping insertion in model container [2022-04-05 00:24:19,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 12:24:19" (1/1) ... [2022-04-05 00:24:19,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 00:24:19,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 00:24:19,935 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-acceleration/simple_3-2.c[376,389] [2022-04-05 00:24:19,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 00:24:19,945 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 00:24:19,952 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-acceleration/simple_3-2.c[376,389] [2022-04-05 00:24:19,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 00:24:20,027 INFO L208 MainTranslator]: Completed translation [2022-04-05 00:24:20,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:20 WrapperNode [2022-04-05 00:24:20,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 00:24:20,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 00:24:20,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 00:24:20,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 00:24:20,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:20" (1/1) ... [2022-04-05 00:24:20,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:20" (1/1) ... [2022-04-05 00:24:20,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:20" (1/1) ... [2022-04-05 00:24:20,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:20" (1/1) ... [2022-04-05 00:24:20,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:20" (1/1) ... [2022-04-05 00:24:20,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:20" (1/1) ... [2022-04-05 00:24:20,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:20" (1/1) ... [2022-04-05 00:24:20,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 00:24:20,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 00:24:20,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 00:24:20,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 00:24:20,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:20" (1/1) ... [2022-04-05 00:24:20,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 00:24:20,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 00:24:20,145 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) [2022-04-05 00:24:20,192 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 [2022-04-05 00:24:20,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 00:24:20,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 00:24:20,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 00:24:20,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 00:24:20,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 00:24:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 00:24:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 00:24:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 00:24:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 00:24:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2022-04-05 00:24:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 00:24:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 00:24:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 00:24:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 00:24:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 00:24:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 00:24:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 00:24:20,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 00:24:20,265 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 00:24:20,266 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 00:24:20,404 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 00:24:20,412 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 00:24:20,412 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 00:24:20,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:24:20 BoogieIcfgContainer [2022-04-05 00:24:20,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 00:24:20,413 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 00:24:20,414 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 00:24:20,417 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 00:24:20,420 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:24:20" (1/1) ... [2022-04-05 00:24:20,421 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 00:24:20,684 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-05 00:24:20,685 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_3 (+ v_main_~x~0_4 2)) (< (mod v_main_~x~0_4 4294967296) (mod v_main_~N~0_3 65536))) InVars {main_~x~0=v_main_~x~0_4, main_~N~0=v_main_~N~0_3} OutVars{main_~x~0=v_main_~x~0_3, main_~N~0=v_main_~N~0_3} AuxVars[] AssignedVars[main_~x~0] to Formula: (let ((.cse1 (mod v_main_~x~0_4 4294967296)) (.cse0 (mod v_main_~N~0_3 65536))) (or (and (= v_main_~x~0_4 v_main_~x~0_3) (<= .cse0 .cse1)) (and (= (mod (+ v_main_~x~0_4 v_main_~x~0_3) 2) 0) (< .cse1 .cse0) (forall ((v_it_1 Int)) (or (< (mod (+ (* v_it_1 2) v_main_~x~0_4) 4294967296) (mod v_main_~N~0_3 65536)) (not (<= (+ v_it_1 1) (div (+ v_main_~x~0_4 (* (- 1) v_main_~x~0_3)) (- 2)))) (not (<= 1 v_it_1)))) (< 0 (div (+ v_main_~x~0_4 (* (- 1) v_main_~x~0_3)) (- 2)))))) InVars {main_~x~0=v_main_~x~0_4, main_~N~0=v_main_~N~0_3} OutVars{main_~x~0=v_main_~x~0_3, main_~N~0=v_main_~N~0_3} AuxVars[] AssignedVars[main_~x~0] [2022-04-05 00:24:20,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 12:24:20 BasicIcfg [2022-04-05 00:24:20,689 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 00:24:20,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 00:24:20,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 00:24:20,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 00:24:20,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 12:24:19" (1/4) ... [2022-04-05 00:24:20,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3151b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 12:24:20, skipping insertion in model container [2022-04-05 00:24:20,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 12:24:20" (2/4) ... [2022-04-05 00:24:20,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3151b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 12:24:20, skipping insertion in model container [2022-04-05 00:24:20,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 12:24:20" (3/4) ... [2022-04-05 00:24:20,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3151b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 12:24:20, skipping insertion in model container [2022-04-05 00:24:20,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 12:24:20" (4/4) ... [2022-04-05 00:24:20,704 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_3-2.cJordan [2022-04-05 00:24:20,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 00:24:20,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 00:24:20,730 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 00:24:20,735 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 [2022-04-05 00:24:20,736 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 00:24:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-04-05 00:24:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-05 00:24:20,747 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:24:20,747 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:24:20,748 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:24:20,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:24:20,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2022-04-05 00:24:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:24:20,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492775625] [2022-04-05 00:24:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:24:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:24:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:24:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:24:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:24:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:24:20,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:24:20,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492775625] [2022-04-05 00:24:20,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492775625] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:24:20,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:24:20,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 00:24:20,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222604837] [2022-04-05 00:24:20,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:24:20,854 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 00:24:20,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:24:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 00:24:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 00:24:20,872 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:24:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:24:20,892 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-04-05 00:24:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 00:24:20,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-05 00:24:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:24:20,898 INFO L225 Difference]: With dead ends: 18 [2022-04-05 00:24:20,898 INFO L226 Difference]: Without dead ends: 12 [2022-04-05 00:24:20,899 INFO L912 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 [2022-04-05 00:24:20,902 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 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 [2022-04-05 00:24:20,902 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 00:24:20,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-04-05 00:24:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-04-05 00:24:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:24:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-04-05 00:24:20,923 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-04-05 00:24:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:24:20,923 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-04-05 00:24:20,924 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:24:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-04-05 00:24:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-05 00:24:20,924 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:24:20,924 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:24:20,924 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 00:24:20,925 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:24:20,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:24:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2022-04-05 00:24:20,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:24:20,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143982525] [2022-04-05 00:24:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:24:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:24:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:24:21,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:24:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:24:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:24:21,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:24:21,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143982525] [2022-04-05 00:24:21,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143982525] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 00:24:21,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 00:24:21,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 00:24:21,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934846464] [2022-04-05 00:24:21,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:24:21,022 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 00:24:21,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:24:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 00:24:21,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 00:24:21,022 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:24:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:24:21,071 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-05 00:24:21,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 00:24:21,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-05 00:24:21,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:24:21,072 INFO L225 Difference]: With dead ends: 16 [2022-04-05 00:24:21,072 INFO L226 Difference]: Without dead ends: 13 [2022-04-05 00:24:21,073 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-05 00:24:21,074 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 00:24:21,074 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 26 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-04-05 00:24:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-05 00:24:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-05 00:24:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:24:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-05 00:24:21,076 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-04-05 00:24:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:24:21,077 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-05 00:24:21,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:24:21,077 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-05 00:24:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-05 00:24:21,077 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 00:24:21,077 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 00:24:21,078 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 00:24:21,078 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 00:24:21,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 00:24:21,078 INFO L85 PathProgramCache]: Analyzing trace with hash -814146699, now seen corresponding path program 1 times [2022-04-05 00:24:21,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 00:24:21,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507977793] [2022-04-05 00:24:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:24:21,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 00:24:21,093 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ main_~N~0_5 (* (- 65536) (div main_~N~0_5 65536)) (* (- 2) .v_it_1.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_1.0) main_~x~0_5) 4294967296))) 0)) [2022-04-05 00:24:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:24:21,121 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ main_~N~0_5 (* (- 65536) (div main_~N~0_5 65536)) (* (- 2) .v_it_1.1) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_1.1) main_~x~0_5) 4294967296))) 0)) [2022-04-05 00:24:21,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 00:24:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:24:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:24:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 00:24:21,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507977793] [2022-04-05 00:24:21,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507977793] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 00:24:21,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399002481] [2022-04-05 00:24:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 00:24:21,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 00:24:21,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 00:24:21,220 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) [2022-04-05 00:24:21,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 00:24:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 00:24:21,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-05 00:24:21,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 00:24:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 00:24:21,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 00:24:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-05 00:24:22,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399002481] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 00:24:22,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-04-05 00:24:22,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 10 [2022-04-05 00:24:22,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969870913] [2022-04-05 00:24:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 00:24:22,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 00:24:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 00:24:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 00:24:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-05 00:24:22,125 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:24:22,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 00:24:22,137 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-04-05 00:24:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 00:24:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 12 [2022-04-05 00:24:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 00:24:22,137 INFO L225 Difference]: With dead ends: 11 [2022-04-05 00:24:22,137 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 00:24:22,138 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-04-05 00:24:22,139 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 00:24:22,139 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-04-05 00:24:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 00:24:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 00:24:22,140 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) [2022-04-05 00:24:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 00:24:22,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-04-05 00:24:22,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 00:24:22,140 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 00:24:22,140 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 00:24:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 00:24:22,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 00:24:22,142 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 00:24:22,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-05 00:24:22,355 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 [2022-04-05 00:24:22,370 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-05 00:24:22,371 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 00:24:22,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 12:24:22 BasicIcfg [2022-04-05 00:24:22,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 00:24:22,374 INFO L158 Benchmark]: Toolchain (without parser) took 2562.44ms. Allocated memory was 203.4MB in the beginning and 272.6MB in the end (delta: 69.2MB). Free memory was 151.9MB in the beginning and 180.8MB in the end (delta: -29.0MB). Peak memory consumption was 39.7MB. Max. memory is 8.0GB. [2022-04-05 00:24:22,374 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 203.4MB. Free memory is still 168.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 00:24:22,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.50ms. Allocated memory is still 203.4MB. Free memory was 151.7MB in the beginning and 179.9MB in the end (delta: -28.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 00:24:22,375 INFO L158 Benchmark]: Boogie Preprocessor took 17.85ms. Allocated memory is still 203.4MB. Free memory was 179.9MB in the beginning and 178.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 00:24:22,375 INFO L158 Benchmark]: RCFGBuilder took 355.38ms. Allocated memory is still 203.4MB. Free memory was 178.9MB in the beginning and 169.4MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-05 00:24:22,375 INFO L158 Benchmark]: IcfgTransformer took 275.22ms. Allocated memory is still 203.4MB. Free memory was 169.4MB in the beginning and 161.6MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-04-05 00:24:22,375 INFO L158 Benchmark]: TraceAbstraction took 1683.67ms. Allocated memory was 203.4MB in the beginning and 272.6MB in the end (delta: 69.2MB). Free memory was 161.1MB in the beginning and 180.8MB in the end (delta: -19.8MB). Peak memory consumption was 49.1MB. Max. memory is 8.0GB. [2022-04-05 00:24:22,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {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 0.10ms. Allocated memory is still 203.4MB. Free memory is still 168.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.50ms. Allocated memory is still 203.4MB. Free memory was 151.7MB in the beginning and 179.9MB in the end (delta: -28.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.85ms. Allocated memory is still 203.4MB. Free memory was 179.9MB in the beginning and 178.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 355.38ms. Allocated memory is still 203.4MB. Free memory was 178.9MB in the beginning and 169.4MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 275.22ms. Allocated memory is still 203.4MB. Free memory was 169.4MB in the beginning and 161.6MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1683.67ms. Allocated memory was 203.4MB in the beginning and 272.6MB in the end (delta: 69.2MB). Free memory was 161.1MB in the beginning and 180.8MB in the end (delta: -19.8MB). Peak memory consumption was 49.1MB. 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: 8]: 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, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 33 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 53 ConstructedInterpolants, 2 QuantifiedInterpolants, 227 SizeOfPredicates, 3 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 1/3 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! [2022-04-05 00:24:22,399 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...