/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/vnew2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 15:44:16,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 15:44:16,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 15:44:16,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-17 15:44:16,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 15:44:16,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 15:44:16,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 15:44:16,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 15:44:16,743 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 15:44:16,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 15:44:16,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 15:44:16,745 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 15:44:16,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 15:44:16,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 15:44:16,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 15:44:16,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 15:44:16,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 15:44:16,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 15:44:16,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 15:44:16,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 15:44:16,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 15:44:16,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 15:44:16,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 15:44:16,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 15:44:16,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 15:44:16,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 15:44:16,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:44:16,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 15:44:16,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 15:44:16,750 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 15:44:16,750 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 15:44:16,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 15:44:16,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 15:44:16,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 15:44:16,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 15:44:16,949 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 15:44:16,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/vnew2.c [2022-03-17 15:44:16,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac6b6f68/084f3741d00f4774af1870bcc85b28ff/FLAG7ada85bf9 [2022-03-17 15:44:17,329 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 15:44:17,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/vnew2.c [2022-03-17 15:44:17,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac6b6f68/084f3741d00f4774af1870bcc85b28ff/FLAG7ada85bf9 [2022-03-17 15:44:17,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac6b6f68/084f3741d00f4774af1870bcc85b28ff [2022-03-17 15:44:17,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 15:44:17,345 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 15:44:17,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 15:44:17,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 15:44:17,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 15:44:17,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bbf0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17, skipping insertion in model container [2022-03-17 15:44:17,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 15:44:17,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 15:44:17,474 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/vnew2.c[403,416] [2022-03-17 15:44:17,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:44:17,488 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 15:44:17,495 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/vnew2.c[403,416] [2022-03-17 15:44:17,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 15:44:17,505 INFO L208 MainTranslator]: Completed translation [2022-03-17 15:44:17,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17 WrapperNode [2022-03-17 15:44:17,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 15:44:17,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 15:44:17,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 15:44:17,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 15:44:17,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 15:44:17,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 15:44:17,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 15:44:17,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 15:44:17,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 15:44:17,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:44:17,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 15:44:17,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 15:44:17,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 15:44:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 15:44:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 15:44:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 15:44:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 15:44:17,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 15:44:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 15:44:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 15:44:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 15:44:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 15:44:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 15:44:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 15:44:17,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-17 15:44:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 15:44:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 15:44:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 15:44:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 15:44:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 15:44:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 15:44:17,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 15:44:17,642 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 15:44:17,643 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 15:44:17,713 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 15:44:17,716 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 15:44:17,717 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 15:44:17,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:44:17 BoogieIcfgContainer [2022-03-17 15:44:17,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 15:44:17,718 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 15:44:17,718 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 15:44:17,719 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 15:44:17,721 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:44:17" (1/1) ... [2022-03-17 15:44:17,908 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=2, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-17 15:44:17,908 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~i~0_2 (+ v_main_~i~0_3 3)) (= v_main_~j~0_1 (+ v_main_~j~0_2 3)) (= v_main_~k~0_1 (+ v_main_~k~0_2 3)) (< (mod v_main_~i~0_3 4294967296) (mod v_main_~n~0_3 4294967296))) InVars {main_~k~0=v_main_~k~0_2, main_~j~0=v_main_~j~0_2, main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_3} OutVars{main_~k~0=v_main_~k~0_1, main_~j~0=v_main_~j~0_1, main_~i~0=v_main_~i~0_2, main_~n~0=v_main_~n~0_3} AuxVars[] AssignedVars[main_~k~0, main_~j~0, main_~i~0] to Formula: (let ((.cse2 (mod v_main_~n~0_3 4294967296)) (.cse1 (mod v_main_~i~0_3 4294967296))) (or (let ((.cse0 (* (div (+ v_main_~k~0_2 (- v_main_~k~0_1)) (- 3)) 3))) (and (= (mod (+ v_main_~k~0_2 (* v_main_~k~0_1 2)) 3) 0) (= (+ v_main_~j~0_2 .cse0) v_main_~j~0_1) (= v_main_~i~0_2 (+ v_main_~i~0_3 .cse0)) (< 0 (div (+ v_main_~k~0_2 (* (- 1) v_main_~k~0_1)) (- 3))) (forall ((v_it_1 Int)) (or (not (<= (+ v_it_1 1) (div (+ v_main_~k~0_2 (* (- 1) v_main_~k~0_1)) (- 3)))) (not (<= 1 v_it_1)) (< (mod (+ v_main_~i~0_3 (* v_it_1 3)) 4294967296) (mod v_main_~n~0_3 4294967296)))) (< .cse1 .cse2))) (and (= v_main_~k~0_2 v_main_~k~0_1) (= v_main_~j~0_2 v_main_~j~0_1) (<= .cse2 .cse1) (= v_main_~i~0_3 v_main_~i~0_2)))) InVars {main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_3, main_~k~0=v_main_~k~0_2, main_~j~0=v_main_~j~0_2} OutVars{main_~i~0=v_main_~i~0_2, main_~n~0=v_main_~n~0_3, main_~k~0=v_main_~k~0_1, main_~j~0=v_main_~j~0_1} AuxVars[] AssignedVars[main_~k~0, main_~j~0, main_~i~0] [2022-03-17 15:44:17,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:44:17 BasicIcfg [2022-03-17 15:44:17,912 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 15:44:17,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 15:44:17,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 15:44:17,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 15:44:17,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 03:44:17" (1/4) ... [2022-03-17 15:44:17,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5ae9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:44:17, skipping insertion in model container [2022-03-17 15:44:17,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 03:44:17" (2/4) ... [2022-03-17 15:44:17,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5ae9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 03:44:17, skipping insertion in model container [2022-03-17 15:44:17,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 03:44:17" (3/4) ... [2022-03-17 15:44:17,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5ae9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 03:44:17, skipping insertion in model container [2022-03-17 15:44:17,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 03:44:17" (4/4) ... [2022-03-17 15:44:17,917 INFO L111 eAbstractionObserver]: Analyzing ICFG vnew2.cJordan [2022-03-17 15:44:17,920 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 15:44:17,920 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 15:44:17,943 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 15:44:17,948 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 15:44:17,948 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 15:44:17,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-17 15:44:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 15:44:17,960 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:44:17,961 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:44:17,961 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:44:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:44:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash -310389807, now seen corresponding path program 1 times [2022-03-17 15:44:17,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:44:17,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705499150] [2022-03-17 15:44:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:44:17,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:44:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:44:18,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 15:44:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:44:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:44:18,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:44:18,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705499150] [2022-03-17 15:44:18,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705499150] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:44:18,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:44:18,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 15:44:18,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313068832] [2022-03-17 15:44:18,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:44:18,117 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 15:44:18,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:44:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 15:44:18,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 15:44:18,134 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:44:18,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:44:18,157 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-03-17 15:44:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 15:44:18,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-17 15:44:18,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:44:18,176 INFO L225 Difference]: With dead ends: 21 [2022-03-17 15:44:18,176 INFO L226 Difference]: Without dead ends: 14 [2022-03-17 15:44:18,177 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 15:44:18,180 INFO L912 BasicCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:44:18,180 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 15:44:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-17 15:44:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-17 15:44:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:44:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-17 15:44:18,204 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2022-03-17 15:44:18,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:44:18,204 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-17 15:44:18,204 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:44:18,205 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-17 15:44:18,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-17 15:44:18,205 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:44:18,205 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:44:18,205 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 15:44:18,206 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:44:18,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:44:18,207 INFO L85 PathProgramCache]: Analyzing trace with hash -281760656, now seen corresponding path program 1 times [2022-03-17 15:44:18,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:44:18,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420756767] [2022-03-17 15:44:18,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:44:18,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:44:18,237 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 15:44:18,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006290509] [2022-03-17 15:44:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:44:18,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:44:18,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:44:18,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:44:18,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 15:44:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:44:18,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-17 15:44:18,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:44:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:44:18,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 15:44:18,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:44:18,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420756767] [2022-03-17 15:44:18,372 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 15:44:18,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006290509] [2022-03-17 15:44:18,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006290509] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 15:44:18,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 15:44:18,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 15:44:18,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985268954] [2022-03-17 15:44:18,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 15:44:18,374 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 15:44:18,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:44:18,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 15:44:18,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 15:44:18,374 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:44:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:44:18,388 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-03-17 15:44:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 15:44:18,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-17 15:44:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:44:18,389 INFO L225 Difference]: With dead ends: 16 [2022-03-17 15:44:18,389 INFO L226 Difference]: Without dead ends: 15 [2022-03-17 15:44:18,389 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-17 15:44:18,390 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:44:18,390 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 31 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-03-17 15:44:18,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-17 15:44:18,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-17 15:44:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:44:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-17 15:44:18,393 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-03-17 15:44:18,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:44:18,393 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-17 15:44:18,393 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 15:44:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-17 15:44:18,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-17 15:44:18,393 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:44:18,394 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:44:18,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 15:44:18,612 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:44:18,614 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:44:18,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:44:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash 683692065, now seen corresponding path program 1 times [2022-03-17 15:44:18,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:44:18,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016651829] [2022-03-17 15:44:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:44:18,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:44:18,629 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ main_~n~0_5 (* (- 4294967296) (div main_~n~0_5 4294967296)) (* (- 1) main_~i~0_6) (* (- 3) .v_it_1.0) (* 4294967296 (div (+ main_~i~0_6 (* 3 .v_it_1.0)) 4294967296))) 0)) [2022-03-17 15:44:18,649 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 15:44:18,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692848718] [2022-03-17 15:44:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:44:18,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:44:18,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:44:18,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:44:18,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 15:44:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 15:44:18,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-17 15:44:18,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 15:44:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:44:28,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 15:44:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 15:44:52,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 15:44:52,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016651829] [2022-03-17 15:44:52,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 15:44:52,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692848718] [2022-03-17 15:44:52,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692848718] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 15:44:52,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 15:44:52,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2022-03-17 15:44:52,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410872236] [2022-03-17 15:44:52,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 15:44:52,392 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 15:44:52,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 15:44:52,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 15:44:52,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=177, Unknown=4, NotChecked=0, Total=240 [2022-03-17 15:44:52,393 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-17 15:44:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 15:44:52,430 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-03-17 15:44:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 15:44:52,431 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-03-17 15:44:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 15:44:52,431 INFO L225 Difference]: With dead ends: 20 [2022-03-17 15:44:52,431 INFO L226 Difference]: Without dead ends: 16 [2022-03-17 15:44:52,432 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=64, Invalid=204, Unknown=4, NotChecked=0, Total=272 [2022-03-17 15:44:52,432 INFO L912 BasicCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 15:44:52,433 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 56 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2022-03-17 15:44:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-17 15:44:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-17 15:44:52,434 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) [2022-03-17 15:44:52,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-03-17 15:44:52,435 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2022-03-17 15:44:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 15:44:52,435 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-03-17 15:44:52,435 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-17 15:44:52,435 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-03-17 15:44:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-17 15:44:52,435 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 15:44:52,435 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 15:44:52,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-17 15:44:52,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-17 15:44:52,643 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 15:44:52,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 15:44:52,643 INFO L85 PathProgramCache]: Analyzing trace with hash 547955344, now seen corresponding path program 2 times [2022-03-17 15:44:52,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 15:44:52,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516857563] [2022-03-17 15:44:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 15:44:52,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 15:44:52,656 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ main_~n~0_5 (* (- 4294967296) (div main_~n~0_5 4294967296)) (* (- 1) main_~i~0_6) (* (- 3) .v_it_1.0) (* 4294967296 (div (+ main_~i~0_6 (* 3 .v_it_1.0)) 4294967296))) 0)) [2022-03-17 15:44:52,658 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ main_~n~0_5 (* (- 4294967296) (div main_~n~0_5 4294967296)) (* (- 1) main_~i~0_7) (* (- 3) .v_it_1.1) (* 4294967296 (div (+ main_~i~0_7 (* 3 .v_it_1.1)) 4294967296))) 0)) [2022-03-17 15:44:52,661 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 15:44:52,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346460442] [2022-03-17 15:44:52,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 15:44:52,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 15:44:52,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 15:44:52,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 15:44:52,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process