/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 16:21:52,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 16:21:52,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 16:21:52,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-27 16:21:52,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 16:21:52,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 16:21:52,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 16:21:52,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-27 16:21:52,661 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 16:21:52,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 16:21:52,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 16:21:52,662 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 16:21:52,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 16:21:52,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 16:21:52,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 16:21:52,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 16:21:52,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 16:21:52,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 16:21:52,664 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 16:21:52,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 16:21:52,664 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 16:21:52,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 16:21:52,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 16:21:52,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 16:21:52,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-27 16:21:52,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 16:21:52,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 16:21:52,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 16:21:52,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 16:21:52,666 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-27 16:21:52,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 16:21:52,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 16:21:52,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 16:21:52,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 16:21:52,935 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 16:21:52,936 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 16:21:52,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2022-04-27 16:21:53,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244470856/d3bfe7650fa1480b94f61a9232badea7/FLAGb5a568763 [2022-04-27 16:21:53,373 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 16:21:53,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2022-04-27 16:21:53,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244470856/d3bfe7650fa1480b94f61a9232badea7/FLAGb5a568763 [2022-04-27 16:21:53,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244470856/d3bfe7650fa1480b94f61a9232badea7 [2022-04-27 16:21:53,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 16:21:53,394 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-27 16:21:53,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 16:21:53,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 16:21:53,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 16:21:53,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd4d704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53, skipping insertion in model container [2022-04-27 16:21:53,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 16:21:53,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 16:21:53,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i[895,908] [2022-04-27 16:21:53,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 16:21:53,605 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 16:21:53,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i[895,908] [2022-04-27 16:21:53,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 16:21:53,644 INFO L208 MainTranslator]: Completed translation [2022-04-27 16:21:53,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53 WrapperNode [2022-04-27 16:21:53,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 16:21:53,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 16:21:53,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 16:21:53,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 16:21:53,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 16:21:53,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 16:21:53,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 16:21:53,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 16:21:53,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 16:21:53,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 16:21:53,719 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) [2022-04-27 16:21:53,725 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 [2022-04-27 16:21:53,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 16:21:53,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 16:21:53,751 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 16:21:53,751 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 16:21:53,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 16:21:53,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 16:21:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 16:21:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 16:21:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-27 16:21:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-27 16:21:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 16:21:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 16:21:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 16:21:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 16:21:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-27 16:21:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 16:21:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 16:21:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 16:21:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 16:21:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 16:21:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 16:21:53,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 16:21:53,810 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 16:21:53,811 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 16:21:53,923 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 16:21:53,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 16:21:53,930 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 16:21:53,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 04:21:53 BoogieIcfgContainer [2022-04-27 16:21:53,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 16:21:53,933 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-27 16:21:53,933 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-27 16:21:53,937 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-27 16:21:53,940 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 04:21:53" (1/1) ... [2022-04-27 16:21:53,942 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-27 16:21:54,384 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=2, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-27 16:21:54,385 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~z~0_1 (+ v_main_~z~0_2 1)) (= (+ v_main_~x~0_1 1) v_main_~x~0_2) (not (= v_main_~x~0_2 0)) (= (+ (- 2) v_main_~y~0_2) v_main_~y~0_1)) InVars {main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2, main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_~z~0=v_main_~z~0_1, main_#t~post4=|v_main_#t~post4_1|, main_~y~0=v_main_~y~0_1, main_#t~post3=|v_main_#t~post3_1|} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post4, main_~y~0, main_#t~post3] to Formula: (let ((.cse0 (= v_main_~x~0_2 0))) (or (and (< v_main_~z~0_2 v_main_~z~0_1) (or (not (<= 1 v_main_~x~0_2)) (not (<= (+ v_main_~x~0_2 v_main_~z~0_2 1) v_main_~z~0_1))) (= v_main_~y~0_1 (+ v_main_~y~0_2 (* v_main_~z~0_2 2) (* (- 2) v_main_~z~0_1))) (= v_main_~x~0_1 (+ v_main_~x~0_2 v_main_~z~0_2 (* (- 1) v_main_~z~0_1))) (not .cse0)) (and (= v_main_~z~0_2 v_main_~z~0_1) (= v_main_~y~0_2 v_main_~y~0_1) (= |v_main_#t~post3_3| |v_main_#t~post3_1|) (= v_main_~x~0_2 v_main_~x~0_1) (= |v_main_#t~post4_3| |v_main_#t~post4_1|) .cse0))) InVars {main_#t~post4=|v_main_#t~post4_3|, main_~y~0=v_main_~y~0_2, main_#t~post3=|v_main_#t~post3_3|, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2} OutVars{main_#t~post4=|v_main_#t~post4_1|, main_~y~0=v_main_~y~0_1, main_#t~post3=|v_main_#t~post3_1|, main_~x~0=v_main_~x~0_1, main_~z~0=v_main_~z~0_1} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post4, main_~y~0, main_#t~post3] [2022-04-27 16:21:54,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 04:21:54 BasicIcfg [2022-04-27 16:21:54,392 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-27 16:21:54,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 16:21:54,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 16:21:54,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 16:21:54,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 04:21:53" (1/4) ... [2022-04-27 16:21:54,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62affc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 04:21:54, skipping insertion in model container [2022-04-27 16:21:54,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 04:21:53" (2/4) ... [2022-04-27 16:21:54,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62affc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 04:21:54, skipping insertion in model container [2022-04-27 16:21:54,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 04:21:53" (3/4) ... [2022-04-27 16:21:54,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62affc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 04:21:54, skipping insertion in model container [2022-04-27 16:21:54,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 04:21:54" (4/4) ... [2022-04-27 16:21:54,402 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.iJordan [2022-04-27 16:21:54,416 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-27 16:21:54,417 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 16:21:54,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 16:21:54,468 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6bb2aab0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@373b680d [2022-04-27 16:21:54,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 16:21:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-04-27 16:21:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-27 16:21:54,482 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 16:21:54,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 16:21:54,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 16:21:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 16:21:54,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1409552995, now seen corresponding path program 1 times [2022-04-27 16:21:54,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 16:21:54,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079003427] [2022-04-27 16:21:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 16:21:54,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 16:21:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 16:21:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 16:21:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 16:21:54,654 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [69] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 9) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {25#true} is VALID [2022-04-27 16:21:54,655 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} [72] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-27 16:21:54,655 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-27 16:21:54,660 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} [67] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 16:21:54,660 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [69] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 9) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {25#true} is VALID [2022-04-27 16:21:54,661 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} [72] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-27 16:21:54,661 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-27 16:21:54,661 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} [68] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-27 16:21:54,661 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} [71] mainENTRY-->L28: Formula: (and (<= |v_main_#t~nondet1_2| 2147483647) (= v_main_~j~0_3 |v_main_#t~nondet2_2|) (<= 0 (+ |v_main_#t~nondet2_2| 2147483648)) (<= |v_main_#t~nondet2_2| 2147483647) (<= 0 (+ |v_main_#t~nondet1_2| 2147483648)) (= v_main_~i~0_3 |v_main_#t~nondet1_2|)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|, main_#t~nondet2=|v_main_#t~nondet2_2|} OutVars{main_~i~0=v_main_~i~0_3, main_~j~0=v_main_~j~0_3} AuxVars[] AssignedVars[main_#t~nondet1, main_~j~0, main_#t~nondet2, main_~i~0] {25#true} is VALID [2022-04-27 16:21:54,662 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} [74] L28-->L29: Formula: (and (<= v_main_~i~0_7 1000000) (<= 0 v_main_~i~0_7)) InVars {main_~i~0=v_main_~i~0_7} OutVars{main_~i~0=v_main_~i~0_7} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-27 16:21:54,662 INFO L290 TraceCheckUtils]: 7: Hoare triple {25#true} [77] L29-->L33-2: Formula: (and (= v_main_~j~0_7 v_main_~y~0_4) (= v_main_~i~0_8 v_main_~x~0_3) (= v_main_~z~0_4 0) (<= 0 v_main_~j~0_7)) InVars {main_~i~0=v_main_~i~0_8, main_~j~0=v_main_~j~0_7} OutVars{main_~i~0=v_main_~i~0_8, main_~y~0=v_main_~y~0_4, main_~x~0=v_main_~x~0_3, main_~z~0=v_main_~z~0_4, main_~j~0=v_main_~j~0_7} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_~y~0] {25#true} is VALID [2022-04-27 16:21:54,664 INFO L290 TraceCheckUtils]: 8: Hoare triple {25#true} [78] L33-2-->L33-3: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-27 16:21:54,665 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} [81] L33-3-->L39: Formula: (= v_main_~i~0_1 v_main_~j~0_1) InVars {main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} OutVars{main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-27 16:21:54,666 INFO L272 TraceCheckUtils]: 10: Hoare triple {26#false} [83] L39-->__VERIFIER_assertENTRY: Formula: (= (ite (= (- v_main_~z~0_5) v_main_~y~0_5) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~y~0=v_main_~y~0_5, main_~z~0=v_main_~z~0_5} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~z~0, main_~y~0] {26#false} is VALID [2022-04-27 16:21:54,667 INFO L290 TraceCheckUtils]: 11: Hoare triple {26#false} [85] __VERIFIER_assertENTRY-->L18: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {26#false} is VALID [2022-04-27 16:21:54,667 INFO L290 TraceCheckUtils]: 12: Hoare triple {26#false} [86] L18-->L19: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-27 16:21:54,668 INFO L290 TraceCheckUtils]: 13: Hoare triple {26#false} [88] L19-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-27 16:21:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 16:21:54,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 16:21:54,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079003427] [2022-04-27 16:21:54,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079003427] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 16:21:54,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 16:21:54,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 16:21:54,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294048657] [2022-04-27 16:21:54,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 16:21:54,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 14 [2022-04-27 16:21:54,678 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 16:21:54,682 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-04-27 16:21:54,705 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 16:21:54,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 16:21:54,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 16:21:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 16:21:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 16:21:54,739 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-04-27 16:21:54,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 16:21:54,799 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-04-27 16:21:54,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 16:21:54,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 14 [2022-04-27 16:21:54,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 16:21:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-04-27 16:21:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2022-04-27 16:21:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-04-27 16:21:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2022-04-27 16:21:54,822 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 27 transitions. [2022-04-27 16:21:54,857 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 16:21:54,865 INFO L225 Difference]: With dead ends: 22 [2022-04-27 16:21:54,865 INFO L226 Difference]: Without dead ends: 15 [2022-04-27 16:21:54,867 INFO L412 NwaCegarLoop]: 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 [2022-04-27 16:21:54,872 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 27 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 [2022-04-27 16:21:54,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 27 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 16:21:54,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-27 16:21:54,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-27 16:21:54,902 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 16:21:54,902 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 16:21:54,903 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 16:21:54,903 INFO L87 Difference]: Start difference. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 16:21:54,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 16:21:54,911 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-04-27 16:21:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-27 16:21:54,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 16:21:54,912 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 16:21:54,912 INFO L74 IsIncluded]: Start isIncluded. First operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 15 states. [2022-04-27 16:21:54,913 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 15 states. [2022-04-27 16:21:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 16:21:54,916 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-04-27 16:21:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-27 16:21:54,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 16:21:54,917 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 16:21:54,917 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 16:21:54,917 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 16:21:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 16:21:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-04-27 16:21:54,923 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 14 [2022-04-27 16:21:54,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 16:21:54,923 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-04-27 16:21:54,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-04-27 16:21:54,924 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-27 16:21:54,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-27 16:21:54,924 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 16:21:54,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 16:21:54,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 16:21:54,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 16:21:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 16:21:54,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1438182146, now seen corresponding path program 1 times [2022-04-27 16:21:54,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 16:21:54,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256031548] [2022-04-27 16:21:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 16:21:54,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 16:21:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 16:21:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 16:21:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 16:21:55,259 INFO L290 TraceCheckUtils]: 0: Hoare triple {110#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [69] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 9) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {100#true} is VALID [2022-04-27 16:21:55,260 INFO L290 TraceCheckUtils]: 1: Hoare triple {100#true} [72] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {100#true} is VALID [2022-04-27 16:21:55,260 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {100#true} {100#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {100#true} is VALID [2022-04-27 16:21:55,261 INFO L272 TraceCheckUtils]: 0: Hoare triple {100#true} [67] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {110#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 16:21:55,261 INFO L290 TraceCheckUtils]: 1: Hoare triple {110#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [69] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 9) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {100#true} is VALID [2022-04-27 16:21:55,261 INFO L290 TraceCheckUtils]: 2: Hoare triple {100#true} [72] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {100#true} is VALID [2022-04-27 16:21:55,262 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {100#true} {100#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {100#true} is VALID [2022-04-27 16:21:55,262 INFO L272 TraceCheckUtils]: 4: Hoare triple {100#true} [68] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {100#true} is VALID [2022-04-27 16:21:55,262 INFO L290 TraceCheckUtils]: 5: Hoare triple {100#true} [71] mainENTRY-->L28: Formula: (and (<= |v_main_#t~nondet1_2| 2147483647) (= v_main_~j~0_3 |v_main_#t~nondet2_2|) (<= 0 (+ |v_main_#t~nondet2_2| 2147483648)) (<= |v_main_#t~nondet2_2| 2147483647) (<= 0 (+ |v_main_#t~nondet1_2| 2147483648)) (= v_main_~i~0_3 |v_main_#t~nondet1_2|)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|, main_#t~nondet2=|v_main_#t~nondet2_2|} OutVars{main_~i~0=v_main_~i~0_3, main_~j~0=v_main_~j~0_3} AuxVars[] AssignedVars[main_#t~nondet1, main_~j~0, main_#t~nondet2, main_~i~0] {100#true} is VALID [2022-04-27 16:21:55,262 INFO L290 TraceCheckUtils]: 6: Hoare triple {100#true} [74] L28-->L29: Formula: (and (<= v_main_~i~0_7 1000000) (<= 0 v_main_~i~0_7)) InVars {main_~i~0=v_main_~i~0_7} OutVars{main_~i~0=v_main_~i~0_7} AuxVars[] AssignedVars[] {100#true} is VALID [2022-04-27 16:21:55,264 INFO L290 TraceCheckUtils]: 7: Hoare triple {100#true} [77] L29-->L33-2: Formula: (and (= v_main_~j~0_7 v_main_~y~0_4) (= v_main_~i~0_8 v_main_~x~0_3) (= v_main_~z~0_4 0) (<= 0 v_main_~j~0_7)) InVars {main_~i~0=v_main_~i~0_8, main_~j~0=v_main_~j~0_7} OutVars{main_~i~0=v_main_~i~0_8, main_~y~0=v_main_~y~0_4, main_~x~0=v_main_~x~0_3, main_~z~0=v_main_~z~0_4, main_~j~0=v_main_~j~0_7} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_~y~0] {105#(and (or (= main_~i~0 0) (= main_~i~0 main_~x~0)) (or (and (= main_~z~0 0) (or (<= main_~y~0 main_~j~0) (<= (+ main_~z~0 main_~y~0) 0)) (< 0 (+ main_~z~0 main_~y~0 1))) (not (= main_~i~0 0))))} is VALID [2022-04-27 16:21:55,265 INFO L290 TraceCheckUtils]: 8: Hoare triple {105#(and (or (= main_~i~0 0) (= main_~i~0 main_~x~0)) (or (and (= main_~z~0 0) (or (<= main_~y~0 main_~j~0) (<= (+ main_~z~0 main_~y~0) 0)) (< 0 (+ main_~z~0 main_~y~0 1))) (not (= main_~i~0 0))))} [79] L33-2-->L33-3: Formula: (= v_main_~x~0_4 0) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_4} AuxVars[] AssignedVars[] {106#(and (= main_~z~0 0) (or (<= main_~y~0 main_~j~0) (<= (+ main_~z~0 main_~y~0) 0)) (= main_~i~0 0) (< 0 (+ main_~z~0 main_~y~0 1)))} is VALID [2022-04-27 16:21:55,266 INFO L290 TraceCheckUtils]: 9: Hoare triple {106#(and (= main_~z~0 0) (or (<= main_~y~0 main_~j~0) (<= (+ main_~z~0 main_~y~0) 0)) (= main_~i~0 0) (< 0 (+ main_~z~0 main_~y~0 1)))} [81] L33-3-->L39: Formula: (= v_main_~i~0_1 v_main_~j~0_1) InVars {main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} OutVars{main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} AuxVars[] AssignedVars[] {107#(and (= main_~z~0 0) (<= main_~y~0 0) (< 0 (+ main_~z~0 main_~y~0 1)))} is VALID [2022-04-27 16:21:55,267 INFO L272 TraceCheckUtils]: 10: Hoare triple {107#(and (= main_~z~0 0) (<= main_~y~0 0) (< 0 (+ main_~z~0 main_~y~0 1)))} [83] L39-->__VERIFIER_assertENTRY: Formula: (= (ite (= (- v_main_~z~0_5) v_main_~y~0_5) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~y~0=v_main_~y~0_5, main_~z~0=v_main_~z~0_5} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~z~0, main_~y~0] {108#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 16:21:55,267 INFO L290 TraceCheckUtils]: 11: Hoare triple {108#(not (= |__VERIFIER_assert_#in~cond| 0))} [85] __VERIFIER_assertENTRY-->L18: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {109#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-27 16:21:55,268 INFO L290 TraceCheckUtils]: 12: Hoare triple {109#(not (= __VERIFIER_assert_~cond 0))} [86] L18-->L19: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {101#false} is VALID [2022-04-27 16:21:55,269 INFO L290 TraceCheckUtils]: 13: Hoare triple {101#false} [88] L19-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {101#false} is VALID [2022-04-27 16:21:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 16:21:55,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 16:21:55,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256031548] [2022-04-27 16:21:55,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256031548] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 16:21:55,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 16:21:55,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-27 16:21:55,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877438433] [2022-04-27 16:21:55,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 16:21:55,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 14 [2022-04-27 16:21:55,272 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 16:21:55,272 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-04-27 16:21:55,288 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 16:21:55,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-27 16:21:55,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 16:21:55,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-27 16:21:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-04-27 16:21:55,295 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-04-27 16:21:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 16:21:55,548 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-04-27 16:21:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-27 16:21:55,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 14 [2022-04-27 16:21:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 16:21:55,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-04-27 16:21:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2022-04-27 16:21:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-04-27 16:21:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2022-04-27 16:21:55,560 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 21 transitions. [2022-04-27 16:21:55,581 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 16:21:55,582 INFO L225 Difference]: With dead ends: 20 [2022-04-27 16:21:55,582 INFO L226 Difference]: Without dead ends: 16 [2022-04-27 16:21:55,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-04-27 16:21:55,586 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-27 16:21:55,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 38 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-27 16:21:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-27 16:21:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-04-27 16:21:55,591 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 16:21:55,591 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-04-27 16:21:55,593 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-04-27 16:21:55,593 INFO L87 Difference]: Start difference. First operand 16 states. Second operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-04-27 16:21:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 16:21:55,595 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-27 16:21:55,595 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-27 16:21:55,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 16:21:55,595 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 16:21:55,596 INFO L74 IsIncluded]: Start isIncluded. First operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) Second operand 16 states. [2022-04-27 16:21:55,596 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) Second operand 16 states. [2022-04-27 16:21:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 16:21:55,597 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-27 16:21:55,597 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-27 16:21:55,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 16:21:55,598 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 16:21:55,598 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 16:21:55,598 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 16:21:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-04-27 16:21:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-04-27 16:21:55,599 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2022-04-27 16:21:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 16:21:55,600 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-04-27 16:21:55,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-04-27 16:21:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-27 16:21:55,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-27 16:21:55,601 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 16:21:55,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 16:21:55,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-27 16:21:55,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 16:21:55,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 16:21:55,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1832655910, now seen corresponding path program 1 times [2022-04-27 16:21:55,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 16:21:55,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185843989] [2022-04-27 16:21:55,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 16:21:55,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 16:21:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 16:21:55,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 16:21:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 16:21:55,916 INFO L290 TraceCheckUtils]: 0: Hoare triple {202#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [69] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 9) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {191#true} is VALID [2022-04-27 16:21:55,917 INFO L290 TraceCheckUtils]: 1: Hoare triple {191#true} [72] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:55,917 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {191#true} {191#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:55,918 INFO L272 TraceCheckUtils]: 0: Hoare triple {191#true} [67] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {202#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 16:21:55,919 INFO L290 TraceCheckUtils]: 1: Hoare triple {202#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [69] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 9) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {191#true} is VALID [2022-04-27 16:21:55,919 INFO L290 TraceCheckUtils]: 2: Hoare triple {191#true} [72] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:55,919 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {191#true} {191#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:55,919 INFO L272 TraceCheckUtils]: 4: Hoare triple {191#true} [68] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:55,920 INFO L290 TraceCheckUtils]: 5: Hoare triple {191#true} [71] mainENTRY-->L28: Formula: (and (<= |v_main_#t~nondet1_2| 2147483647) (= v_main_~j~0_3 |v_main_#t~nondet2_2|) (<= 0 (+ |v_main_#t~nondet2_2| 2147483648)) (<= |v_main_#t~nondet2_2| 2147483647) (<= 0 (+ |v_main_#t~nondet1_2| 2147483648)) (= v_main_~i~0_3 |v_main_#t~nondet1_2|)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|, main_#t~nondet2=|v_main_#t~nondet2_2|} OutVars{main_~i~0=v_main_~i~0_3, main_~j~0=v_main_~j~0_3} AuxVars[] AssignedVars[main_#t~nondet1, main_~j~0, main_#t~nondet2, main_~i~0] {191#true} is VALID [2022-04-27 16:21:55,920 INFO L290 TraceCheckUtils]: 6: Hoare triple {191#true} [74] L28-->L29: Formula: (and (<= v_main_~i~0_7 1000000) (<= 0 v_main_~i~0_7)) InVars {main_~i~0=v_main_~i~0_7} OutVars{main_~i~0=v_main_~i~0_7} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:55,922 INFO L290 TraceCheckUtils]: 7: Hoare triple {191#true} [77] L29-->L33-2: Formula: (and (= v_main_~j~0_7 v_main_~y~0_4) (= v_main_~i~0_8 v_main_~x~0_3) (= v_main_~z~0_4 0) (<= 0 v_main_~j~0_7)) InVars {main_~i~0=v_main_~i~0_8, main_~j~0=v_main_~j~0_7} OutVars{main_~i~0=v_main_~i~0_8, main_~y~0=v_main_~y~0_4, main_~x~0=v_main_~x~0_3, main_~z~0=v_main_~z~0_4, main_~j~0=v_main_~j~0_7} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_~y~0] {196#(and (= main_~z~0 0) (<= main_~j~0 main_~y~0) (<= main_~y~0 main_~j~0) (= main_~i~0 main_~x~0))} is VALID [2022-04-27 16:21:55,924 INFO L290 TraceCheckUtils]: 8: Hoare triple {196#(and (= main_~z~0 0) (<= main_~j~0 main_~y~0) (<= main_~y~0 main_~j~0) (= main_~i~0 main_~x~0))} [80] L33-2-->L33-2: Formula: (let ((.cse0 (= v_main_~x~0_2 0))) (or (and (< v_main_~z~0_2 v_main_~z~0_1) (or (not (<= 1 v_main_~x~0_2)) (not (<= (+ v_main_~x~0_2 v_main_~z~0_2 1) v_main_~z~0_1))) (= v_main_~y~0_1 (+ v_main_~y~0_2 (* v_main_~z~0_2 2) (* (- 2) v_main_~z~0_1))) (= v_main_~x~0_1 (+ v_main_~x~0_2 v_main_~z~0_2 (* (- 1) v_main_~z~0_1))) (not .cse0)) (and (= v_main_~z~0_2 v_main_~z~0_1) (= v_main_~y~0_2 v_main_~y~0_1) (= |v_main_#t~post3_3| |v_main_#t~post3_1|) (= v_main_~x~0_2 v_main_~x~0_1) (= |v_main_#t~post4_3| |v_main_#t~post4_1|) .cse0))) InVars {main_#t~post4=|v_main_#t~post4_3|, main_~y~0=v_main_~y~0_2, main_#t~post3=|v_main_#t~post3_3|, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2} OutVars{main_#t~post4=|v_main_#t~post4_1|, main_~y~0=v_main_~y~0_1, main_#t~post3=|v_main_#t~post3_1|, main_~x~0=v_main_~x~0_1, main_~z~0=v_main_~z~0_1} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post4, main_~y~0, main_#t~post3] {197#(or (and (or (<= (+ main_~i~0 main_~z~0 main_~y~0) (+ main_~j~0 main_~x~0)) (<= (+ main_~z~0 main_~y~0) 0)) (or (<= (+ main_~j~0 main_~x~0) (+ main_~i~0 main_~z~0 main_~y~0)) (not (<= (+ main_~z~0 main_~y~0 1) 0)))) (and (or (<= (+ main_~z~0 main_~y~0) 0) (<= (+ main_~z~0 main_~y~0) main_~j~0)) (or (<= main_~j~0 (+ main_~i~0 main_~z~0 main_~y~0)) (not (<= (+ main_~z~0 main_~y~0 1) 0))) (= main_~i~0 0)))} is VALID [2022-04-27 16:21:55,925 INFO L290 TraceCheckUtils]: 9: Hoare triple {197#(or (and (or (<= (+ main_~i~0 main_~z~0 main_~y~0) (+ main_~j~0 main_~x~0)) (<= (+ main_~z~0 main_~y~0) 0)) (or (<= (+ main_~j~0 main_~x~0) (+ main_~i~0 main_~z~0 main_~y~0)) (not (<= (+ main_~z~0 main_~y~0 1) 0)))) (and (or (<= (+ main_~z~0 main_~y~0) 0) (<= (+ main_~z~0 main_~y~0) main_~j~0)) (or (<= main_~j~0 (+ main_~i~0 main_~z~0 main_~y~0)) (not (<= (+ main_~z~0 main_~y~0 1) 0))) (= main_~i~0 0)))} [79] L33-2-->L33-3: Formula: (= v_main_~x~0_4 0) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_4} AuxVars[] AssignedVars[] {198#(and (or (<= main_~j~0 (+ main_~i~0 main_~z~0 main_~y~0)) (not (<= (+ main_~z~0 main_~y~0 1) 0))) (or (<= (+ main_~z~0 main_~y~0) 0) (<= (+ main_~i~0 main_~z~0 main_~y~0) main_~j~0)))} is VALID [2022-04-27 16:21:55,925 INFO L290 TraceCheckUtils]: 10: Hoare triple {198#(and (or (<= main_~j~0 (+ main_~i~0 main_~z~0 main_~y~0)) (not (<= (+ main_~z~0 main_~y~0 1) 0))) (or (<= (+ main_~z~0 main_~y~0) 0) (<= (+ main_~i~0 main_~z~0 main_~y~0) main_~j~0)))} [81] L33-3-->L39: Formula: (= v_main_~i~0_1 v_main_~j~0_1) InVars {main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} OutVars{main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} AuxVars[] AssignedVars[] {199#(and (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1)))} is VALID [2022-04-27 16:21:55,930 INFO L272 TraceCheckUtils]: 11: Hoare triple {199#(and (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1)))} [83] L39-->__VERIFIER_assertENTRY: Formula: (= (ite (= (- v_main_~z~0_5) v_main_~y~0_5) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~y~0=v_main_~y~0_5, main_~z~0=v_main_~z~0_5} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~z~0, main_~y~0] {200#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 16:21:55,931 INFO L290 TraceCheckUtils]: 12: Hoare triple {200#(not (= |__VERIFIER_assert_#in~cond| 0))} [85] __VERIFIER_assertENTRY-->L18: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {201#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-27 16:21:55,932 INFO L290 TraceCheckUtils]: 13: Hoare triple {201#(not (= __VERIFIER_assert_~cond 0))} [86] L18-->L19: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {192#false} is VALID [2022-04-27 16:21:55,932 INFO L290 TraceCheckUtils]: 14: Hoare triple {192#false} [88] L19-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {192#false} is VALID [2022-04-27 16:21:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 16:21:55,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 16:21:55,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185843989] [2022-04-27 16:21:55,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185843989] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-27 16:21:55,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157157996] [2022-04-27 16:21:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 16:21:55,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 16:21:55,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 16:21:55,940 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) [2022-04-27 16:21:55,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-27 16:21:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 16:21:56,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-27 16:21:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 16:21:56,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 16:21:56,614 INFO L272 TraceCheckUtils]: 0: Hoare triple {191#true} [67] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:56,615 INFO L290 TraceCheckUtils]: 1: Hoare triple {191#true} [69] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 9) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {191#true} is VALID [2022-04-27 16:21:56,615 INFO L290 TraceCheckUtils]: 2: Hoare triple {191#true} [72] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:56,615 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {191#true} {191#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:56,615 INFO L272 TraceCheckUtils]: 4: Hoare triple {191#true} [68] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:56,616 INFO L290 TraceCheckUtils]: 5: Hoare triple {191#true} [71] mainENTRY-->L28: Formula: (and (<= |v_main_#t~nondet1_2| 2147483647) (= v_main_~j~0_3 |v_main_#t~nondet2_2|) (<= 0 (+ |v_main_#t~nondet2_2| 2147483648)) (<= |v_main_#t~nondet2_2| 2147483647) (<= 0 (+ |v_main_#t~nondet1_2| 2147483648)) (= v_main_~i~0_3 |v_main_#t~nondet1_2|)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|, main_#t~nondet2=|v_main_#t~nondet2_2|} OutVars{main_~i~0=v_main_~i~0_3, main_~j~0=v_main_~j~0_3} AuxVars[] AssignedVars[main_#t~nondet1, main_~j~0, main_#t~nondet2, main_~i~0] {191#true} is VALID [2022-04-27 16:21:56,616 INFO L290 TraceCheckUtils]: 6: Hoare triple {191#true} [74] L28-->L29: Formula: (and (<= v_main_~i~0_7 1000000) (<= 0 v_main_~i~0_7)) InVars {main_~i~0=v_main_~i~0_7} OutVars{main_~i~0=v_main_~i~0_7} AuxVars[] AssignedVars[] {224#(<= 0 main_~i~0)} is VALID [2022-04-27 16:21:56,617 INFO L290 TraceCheckUtils]: 7: Hoare triple {224#(<= 0 main_~i~0)} [77] L29-->L33-2: Formula: (and (= v_main_~j~0_7 v_main_~y~0_4) (= v_main_~i~0_8 v_main_~x~0_3) (= v_main_~z~0_4 0) (<= 0 v_main_~j~0_7)) InVars {main_~i~0=v_main_~i~0_8, main_~j~0=v_main_~j~0_7} OutVars{main_~i~0=v_main_~i~0_8, main_~y~0=v_main_~y~0_4, main_~x~0=v_main_~x~0_3, main_~z~0=v_main_~z~0_4, main_~j~0=v_main_~j~0_7} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_~y~0] {228#(and (= main_~z~0 0) (= main_~j~0 main_~y~0) (<= 0 main_~i~0) (= main_~i~0 main_~x~0))} is VALID [2022-04-27 16:21:56,618 INFO L290 TraceCheckUtils]: 8: Hoare triple {228#(and (= main_~z~0 0) (= main_~j~0 main_~y~0) (<= 0 main_~i~0) (= main_~i~0 main_~x~0))} [80] L33-2-->L33-2: Formula: (let ((.cse0 (= v_main_~x~0_2 0))) (or (and (< v_main_~z~0_2 v_main_~z~0_1) (or (not (<= 1 v_main_~x~0_2)) (not (<= (+ v_main_~x~0_2 v_main_~z~0_2 1) v_main_~z~0_1))) (= v_main_~y~0_1 (+ v_main_~y~0_2 (* v_main_~z~0_2 2) (* (- 2) v_main_~z~0_1))) (= v_main_~x~0_1 (+ v_main_~x~0_2 v_main_~z~0_2 (* (- 1) v_main_~z~0_1))) (not .cse0)) (and (= v_main_~z~0_2 v_main_~z~0_1) (= v_main_~y~0_2 v_main_~y~0_1) (= |v_main_#t~post3_3| |v_main_#t~post3_1|) (= v_main_~x~0_2 v_main_~x~0_1) (= |v_main_#t~post4_3| |v_main_#t~post4_1|) .cse0))) InVars {main_#t~post4=|v_main_#t~post4_3|, main_~y~0=v_main_~y~0_2, main_#t~post3=|v_main_#t~post3_3|, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2} OutVars{main_#t~post4=|v_main_#t~post4_1|, main_~y~0=v_main_~y~0_1, main_#t~post3=|v_main_#t~post3_1|, main_~x~0=v_main_~x~0_1, main_~z~0=v_main_~z~0_1} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post4, main_~y~0, main_#t~post3] {232#(or (and (= main_~z~0 0) (= main_~j~0 main_~y~0) (= main_~i~0 0) (= main_~i~0 main_~x~0)) (and (< 0 main_~z~0) (= main_~i~0 (+ main_~z~0 main_~x~0)) (not (<= (+ main_~i~0 1) main_~z~0)) (= (+ main_~y~0 (* main_~z~0 2)) main_~j~0)))} is VALID [2022-04-27 16:21:56,619 INFO L290 TraceCheckUtils]: 9: Hoare triple {232#(or (and (= main_~z~0 0) (= main_~j~0 main_~y~0) (= main_~i~0 0) (= main_~i~0 main_~x~0)) (and (< 0 main_~z~0) (= main_~i~0 (+ main_~z~0 main_~x~0)) (not (<= (+ main_~i~0 1) main_~z~0)) (= (+ main_~y~0 (* main_~z~0 2)) main_~j~0)))} [79] L33-2-->L33-3: Formula: (= v_main_~x~0_4 0) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_4} AuxVars[] AssignedVars[] {236#(or (and (< 0 main_~z~0) (<= main_~i~0 main_~z~0) (not (<= (+ main_~i~0 1) main_~z~0)) (= (+ main_~y~0 (* main_~z~0 2)) main_~j~0)) (and (= main_~z~0 0) (= main_~j~0 main_~y~0) (= main_~i~0 0)))} is VALID [2022-04-27 16:21:56,620 INFO L290 TraceCheckUtils]: 10: Hoare triple {236#(or (and (< 0 main_~z~0) (<= main_~i~0 main_~z~0) (not (<= (+ main_~i~0 1) main_~z~0)) (= (+ main_~y~0 (* main_~z~0 2)) main_~j~0)) (and (= main_~z~0 0) (= main_~j~0 main_~y~0) (= main_~i~0 0)))} [81] L33-3-->L39: Formula: (= v_main_~i~0_1 v_main_~j~0_1) InVars {main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} OutVars{main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} AuxVars[] AssignedVars[] {240#(or (and (< 0 main_~z~0) (not (<= (+ main_~z~0 main_~y~0 1) 0)) (<= (+ main_~z~0 main_~y~0) 0)) (and (= main_~z~0 0) (= main_~y~0 0)))} is VALID [2022-04-27 16:21:56,621 INFO L272 TraceCheckUtils]: 11: Hoare triple {240#(or (and (< 0 main_~z~0) (not (<= (+ main_~z~0 main_~y~0 1) 0)) (<= (+ main_~z~0 main_~y~0) 0)) (and (= main_~z~0 0) (= main_~y~0 0)))} [83] L39-->__VERIFIER_assertENTRY: Formula: (= (ite (= (- v_main_~z~0_5) v_main_~y~0_5) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~y~0=v_main_~y~0_5, main_~z~0=v_main_~z~0_5} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~z~0, main_~y~0] {244#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 16:21:56,622 INFO L290 TraceCheckUtils]: 12: Hoare triple {244#(<= 1 |__VERIFIER_assert_#in~cond|)} [85] __VERIFIER_assertENTRY-->L18: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {248#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 16:21:56,622 INFO L290 TraceCheckUtils]: 13: Hoare triple {248#(<= 1 __VERIFIER_assert_~cond)} [86] L18-->L19: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {192#false} is VALID [2022-04-27 16:21:56,622 INFO L290 TraceCheckUtils]: 14: Hoare triple {192#false} [88] L19-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {192#false} is VALID [2022-04-27 16:21:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 16:21:56,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 16:21:57,254 INFO L290 TraceCheckUtils]: 14: Hoare triple {192#false} [88] L19-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {192#false} is VALID [2022-04-27 16:21:57,255 INFO L290 TraceCheckUtils]: 13: Hoare triple {248#(<= 1 __VERIFIER_assert_~cond)} [86] L18-->L19: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {192#false} is VALID [2022-04-27 16:21:57,256 INFO L290 TraceCheckUtils]: 12: Hoare triple {244#(<= 1 |__VERIFIER_assert_#in~cond|)} [85] __VERIFIER_assertENTRY-->L18: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {248#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 16:21:57,257 INFO L272 TraceCheckUtils]: 11: Hoare triple {199#(and (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1)))} [83] L39-->__VERIFIER_assertENTRY: Formula: (= (ite (= (- v_main_~z~0_5) v_main_~y~0_5) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~y~0=v_main_~y~0_5, main_~z~0=v_main_~z~0_5} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~z~0, main_~y~0] {244#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 16:21:57,257 INFO L290 TraceCheckUtils]: 10: Hoare triple {267#(or (not (= main_~i~0 main_~j~0)) (and (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1))))} [81] L33-3-->L39: Formula: (= v_main_~i~0_1 v_main_~j~0_1) InVars {main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} OutVars{main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} AuxVars[] AssignedVars[] {199#(and (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1)))} is VALID [2022-04-27 16:21:57,258 INFO L290 TraceCheckUtils]: 9: Hoare triple {271#(or (not (= main_~i~0 main_~j~0)) (not (<= main_~x~0 0)) (and (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1))))} [79] L33-2-->L33-3: Formula: (= v_main_~x~0_4 0) InVars {main_~x~0=v_main_~x~0_4} OutVars{main_~x~0=v_main_~x~0_4} AuxVars[] AssignedVars[] {267#(or (not (= main_~i~0 main_~j~0)) (and (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1))))} is VALID [2022-04-27 16:21:57,260 INFO L290 TraceCheckUtils]: 8: Hoare triple {275#(or (not (= main_~i~0 main_~j~0)) (and (or (and (<= 1 main_~x~0) (<= main_~x~0 (+ main_~z~0 main_~y~0)) (<= (+ main_~z~0 main_~y~0) main_~x~0)) (= main_~x~0 0)) (or (and (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1))) (not (= main_~x~0 0)))))} [80] L33-2-->L33-2: Formula: (let ((.cse0 (= v_main_~x~0_2 0))) (or (and (< v_main_~z~0_2 v_main_~z~0_1) (or (not (<= 1 v_main_~x~0_2)) (not (<= (+ v_main_~x~0_2 v_main_~z~0_2 1) v_main_~z~0_1))) (= v_main_~y~0_1 (+ v_main_~y~0_2 (* v_main_~z~0_2 2) (* (- 2) v_main_~z~0_1))) (= v_main_~x~0_1 (+ v_main_~x~0_2 v_main_~z~0_2 (* (- 1) v_main_~z~0_1))) (not .cse0)) (and (= v_main_~z~0_2 v_main_~z~0_1) (= v_main_~y~0_2 v_main_~y~0_1) (= |v_main_#t~post3_3| |v_main_#t~post3_1|) (= v_main_~x~0_2 v_main_~x~0_1) (= |v_main_#t~post4_3| |v_main_#t~post4_1|) .cse0))) InVars {main_#t~post4=|v_main_#t~post4_3|, main_~y~0=v_main_~y~0_2, main_#t~post3=|v_main_#t~post3_3|, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2} OutVars{main_#t~post4=|v_main_#t~post4_1|, main_~y~0=v_main_~y~0_1, main_#t~post3=|v_main_#t~post3_1|, main_~x~0=v_main_~x~0_1, main_~z~0=v_main_~z~0_1} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post4, main_~y~0, main_#t~post3] {271#(or (not (= main_~i~0 main_~j~0)) (not (<= main_~x~0 0)) (and (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1))))} is VALID [2022-04-27 16:21:57,260 INFO L290 TraceCheckUtils]: 7: Hoare triple {224#(<= 0 main_~i~0)} [77] L29-->L33-2: Formula: (and (= v_main_~j~0_7 v_main_~y~0_4) (= v_main_~i~0_8 v_main_~x~0_3) (= v_main_~z~0_4 0) (<= 0 v_main_~j~0_7)) InVars {main_~i~0=v_main_~i~0_8, main_~j~0=v_main_~j~0_7} OutVars{main_~i~0=v_main_~i~0_8, main_~y~0=v_main_~y~0_4, main_~x~0=v_main_~x~0_3, main_~z~0=v_main_~z~0_4, main_~j~0=v_main_~j~0_7} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_~y~0] {275#(or (not (= main_~i~0 main_~j~0)) (and (or (and (<= 1 main_~x~0) (<= main_~x~0 (+ main_~z~0 main_~y~0)) (<= (+ main_~z~0 main_~y~0) main_~x~0)) (= main_~x~0 0)) (or (and (<= (+ main_~z~0 main_~y~0) 0) (< 0 (+ main_~z~0 main_~y~0 1))) (not (= main_~x~0 0)))))} is VALID [2022-04-27 16:21:57,261 INFO L290 TraceCheckUtils]: 6: Hoare triple {191#true} [74] L28-->L29: Formula: (and (<= v_main_~i~0_7 1000000) (<= 0 v_main_~i~0_7)) InVars {main_~i~0=v_main_~i~0_7} OutVars{main_~i~0=v_main_~i~0_7} AuxVars[] AssignedVars[] {224#(<= 0 main_~i~0)} is VALID [2022-04-27 16:21:57,261 INFO L290 TraceCheckUtils]: 5: Hoare triple {191#true} [71] mainENTRY-->L28: Formula: (and (<= |v_main_#t~nondet1_2| 2147483647) (= v_main_~j~0_3 |v_main_#t~nondet2_2|) (<= 0 (+ |v_main_#t~nondet2_2| 2147483648)) (<= |v_main_#t~nondet2_2| 2147483647) (<= 0 (+ |v_main_#t~nondet1_2| 2147483648)) (= v_main_~i~0_3 |v_main_#t~nondet1_2|)) InVars {main_#t~nondet1=|v_main_#t~nondet1_2|, main_#t~nondet2=|v_main_#t~nondet2_2|} OutVars{main_~i~0=v_main_~i~0_3, main_~j~0=v_main_~j~0_3} AuxVars[] AssignedVars[main_#t~nondet1, main_~j~0, main_#t~nondet2, main_~i~0] {191#true} is VALID [2022-04-27 16:21:57,261 INFO L272 TraceCheckUtils]: 4: Hoare triple {191#true} [68] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:57,261 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {191#true} {191#true} [91] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:57,262 INFO L290 TraceCheckUtils]: 2: Hoare triple {191#true} [72] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:57,262 INFO L290 TraceCheckUtils]: 1: Hoare triple {191#true} [69] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= (select |v_#length_1| 2) 9) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {191#true} is VALID [2022-04-27 16:21:57,262 INFO L272 TraceCheckUtils]: 0: Hoare triple {191#true} [67] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {191#true} is VALID [2022-04-27 16:21:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 16:21:57,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157157996] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-27 16:21:57,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-27 16:21:57,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-04-27 16:21:57,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857452920] [2022-04-27 16:21:57,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-27 16:21:57,264 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-27 16:21:57,264 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 16:21:57,265 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 16:21:57,294 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 16:21:57,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-27 16:21:57,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 16:21:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-27 16:21:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-04-27 16:21:57,295 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 16:21:57,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 16:21:57,722 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-04-27 16:21:57,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-27 16:21:57,723 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-27 16:21:57,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 16:21:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 16:21:57,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2022-04-27 16:21:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 16:21:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2022-04-27 16:21:57,725 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 10 states and 15 transitions. [2022-04-27 16:21:57,741 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 16:21:57,741 INFO L225 Difference]: With dead ends: 14 [2022-04-27 16:21:57,741 INFO L226 Difference]: Without dead ends: 0 [2022-04-27 16:21:57,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2022-04-27 16:21:57,743 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-27 16:21:57,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 50 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-27 16:21:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-27 16:21:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-27 16:21:57,744 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 16:21:57,744 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second 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) [2022-04-27 16:21:57,744 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second 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) [2022-04-27 16:21:57,744 INFO L87 Difference]: Start difference. First operand 0 states. Second 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) [2022-04-27 16:21:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 16:21:57,744 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 16:21:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 16:21:57,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 16:21:57,745 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 16:21:57,745 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 0 states. [2022-04-27 16:21:57,745 INFO L87 Difference]: Start difference. First 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) Second operand 0 states. [2022-04-27 16:21:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 16:21:57,745 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 16:21:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 16:21:57,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 16:21:57,745 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 16:21:57,745 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 16:21:57,745 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 16:21:57,745 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) [2022-04-27 16:21:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-27 16:21:57,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-04-27 16:21:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 16:21:57,746 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-27 16:21:57,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 16:21:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 16:21:57,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 16:21:57,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 16:21:57,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-27 16:21:57,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 16:21:57,962 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-27 16:21:57,963 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 16:21:57,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 04:21:57 BasicIcfg [2022-04-27 16:21:57,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 16:21:57,967 INFO L158 Benchmark]: Toolchain (without parser) took 4572.68ms. Allocated memory was 187.7MB in the beginning and 283.1MB in the end (delta: 95.4MB). Free memory was 132.8MB in the beginning and 135.3MB in the end (delta: -2.4MB). Peak memory consumption was 93.7MB. Max. memory is 8.0GB. [2022-04-27 16:21:57,967 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 187.7MB. Free memory was 149.5MB in the beginning and 149.4MB in the end (delta: 125.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 16:21:57,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.76ms. Allocated memory was 187.7MB in the beginning and 283.1MB in the end (delta: 95.4MB). Free memory was 132.7MB in the beginning and 254.2MB in the end (delta: -121.5MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-04-27 16:21:57,968 INFO L158 Benchmark]: Boogie Preprocessor took 41.16ms. Allocated memory is still 283.1MB. Free memory was 254.2MB in the beginning and 252.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-27 16:21:57,968 INFO L158 Benchmark]: RCFGBuilder took 244.98ms. Allocated memory is still 283.1MB. Free memory was 252.6MB in the beginning and 240.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-27 16:21:57,969 INFO L158 Benchmark]: IcfgTransformer took 459.09ms. Allocated memory is still 283.1MB. Free memory was 240.0MB in the beginning and 222.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-04-27 16:21:57,969 INFO L158 Benchmark]: TraceAbstraction took 3572.87ms. Allocated memory is still 283.1MB. Free memory was 222.2MB in the beginning and 135.3MB in the end (delta: 87.0MB). Peak memory consumption was 87.5MB. Max. memory is 8.0GB. [2022-04-27 16:21:57,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=2, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 187.7MB. Free memory was 149.5MB in the beginning and 149.4MB in the end (delta: 125.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 243.76ms. Allocated memory was 187.7MB in the beginning and 283.1MB in the end (delta: 95.4MB). Free memory was 132.7MB in the beginning and 254.2MB in the end (delta: -121.5MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.16ms. Allocated memory is still 283.1MB. Free memory was 254.2MB in the beginning and 252.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 244.98ms. Allocated memory is still 283.1MB. Free memory was 252.6MB in the beginning and 240.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 459.09ms. Allocated memory is still 283.1MB. Free memory was 240.0MB in the beginning and 222.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3572.87ms. Allocated memory is still 283.1MB. Free memory was 222.2MB in the beginning and 135.3MB in the end (delta: 87.0MB). Peak memory consumption was 87.5MB. 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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 115 IncrementalHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 43 mSDtfsCounter, 115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 21, 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, 1.9s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 470 SizeOfPredicates, 7 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-27 16:21:58,002 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...