/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/nla-digbench-scaling/ps3-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-07 20:44:41,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-07 20:44:41,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-07 20:44:41,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-07 20:44:41,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-07 20:44:41,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-07 20:44:41,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-07 20:44:41,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-07 20:44:41,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-07 20:44:41,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-07 20:44:41,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-07 20:44:41,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-07 20:44:41,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-07 20:44:41,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-07 20:44:41,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-07 20:44:41,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-07 20:44:41,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-07 20:44:41,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-07 20:44:41,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-07 20:44:41,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-07 20:44:41,541 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-07 20:44:41,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-07 20:44:41,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-07 20:44:41,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-07 20:44:41,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-07 20:44:41,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-07 20:44:41,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-07 20:44:41,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-07 20:44:41,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-07 20:44:41,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-07 20:44:41,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-07 20:44:41,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-07 20:44:41,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-07 20:44:41,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-07 20:44:41,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-07 20:44:41,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-07 20:44:41,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-07 20:44:41,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-07 20:44:41,560 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-07 20:44:41,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-07 20:44:41,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-07 20:44:41,561 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-07 20:44:41,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-07 20:44:41,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-07 20:44:41,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-07 20:44:41,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-07 20:44:41,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-07 20:44:41,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-07 20:44:41,562 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-07 20:44:41,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-07 20:44:41,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-07 20:44:41,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-07 20:44:41,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-07 20:44:41,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-07 20:44:41,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-07 20:44:41,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-07 20:44:41,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 20:44:41,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-07 20:44:41,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-07 20:44:41,563 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-07 20:44:41,564 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-07 20:44:41,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-07 20:44:41,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-07 20:44:41,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-07 20:44:41,731 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-07 20:44:41,733 INFO L275 PluginConnector]: CDTParser initialized [2022-04-07 20:44:41,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound20.c [2022-04-07 20:44:41,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86b23e16c/cd6cf0cbdce24b2eafd4a1a9d63045e4/FLAGd07cc5b97 [2022-04-07 20:44:42,111 INFO L306 CDTParser]: Found 1 translation units. [2022-04-07 20:44:42,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound20.c [2022-04-07 20:44:42,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86b23e16c/cd6cf0cbdce24b2eafd4a1a9d63045e4/FLAGd07cc5b97 [2022-04-07 20:44:42,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86b23e16c/cd6cf0cbdce24b2eafd4a1a9d63045e4 [2022-04-07 20:44:42,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-07 20:44:42,126 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-07 20:44:42,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-07 20:44:42,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-07 20:44:42,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-07 20:44:42,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e91889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42, skipping insertion in model container [2022-04-07 20:44:42,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-07 20:44:42,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-07 20:44:42,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound20.c[458,471] [2022-04-07 20:44:42,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 20:44:42,315 INFO L203 MainTranslator]: Completed pre-run [2022-04-07 20:44:42,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound20.c[458,471] [2022-04-07 20:44:42,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-07 20:44:42,347 INFO L208 MainTranslator]: Completed translation [2022-04-07 20:44:42,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42 WrapperNode [2022-04-07 20:44:42,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-07 20:44:42,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-07 20:44:42,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-07 20:44:42,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-07 20:44:42,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-07 20:44:42,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-07 20:44:42,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-07 20:44:42,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-07 20:44:42,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-07 20:44:42,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 20:44:42,403 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) [2022-04-07 20:44:42,431 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 [2022-04-07 20:44:42,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-07 20:44:42,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-07 20:44:42,438 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-07 20:44:42,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-07 20:44:42,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-07 20:44:42,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-07 20:44:42,438 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-07 20:44:42,438 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-07 20:44:42,438 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-07 20:44:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-07 20:44:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-07 20:44:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-07 20:44:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-07 20:44:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-07 20:44:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-07 20:44:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-07 20:44:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-07 20:44:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-07 20:44:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-07 20:44:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-07 20:44:42,487 INFO L234 CfgBuilder]: Building ICFG [2022-04-07 20:44:42,488 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-07 20:44:42,620 INFO L275 CfgBuilder]: Performing block encoding [2022-04-07 20:44:42,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-07 20:44:42,625 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-07 20:44:42,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 08:44:42 BoogieIcfgContainer [2022-04-07 20:44:42,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-07 20:44:42,626 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-07 20:44:42,626 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-07 20:44:42,632 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-07 20:44:42,641 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 08:44:42" (1/1) ... [2022-04-07 20:44:42,643 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-07 20:44:42,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 07.04 08:44:42 BasicIcfg [2022-04-07 20:44:42,656 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-07 20:44:42,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-07 20:44:42,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-07 20:44:42,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-07 20:44:42,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.04 08:44:42" (1/4) ... [2022-04-07 20:44:42,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756c49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 08:44:42, skipping insertion in model container [2022-04-07 20:44:42,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.04 08:44:42" (2/4) ... [2022-04-07 20:44:42,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756c49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.04 08:44:42, skipping insertion in model container [2022-04-07 20:44:42,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.04 08:44:42" (3/4) ... [2022-04-07 20:44:42,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756c49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 08:44:42, skipping insertion in model container [2022-04-07 20:44:42,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 07.04 08:44:42" (4/4) ... [2022-04-07 20:44:42,664 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound20.cJordan [2022-04-07 20:44:42,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-07 20:44:42,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-07 20:44:42,699 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-07 20:44:42,707 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-07 20:44:42,707 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-07 20:44:42,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-07 20:44:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-07 20:44:42,723 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 20:44:42,723 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 20:44:42,724 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 20:44:42,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 20:44:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2022-04-07 20:44:42,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 20:44:42,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309345273] [2022-04-07 20:44:42,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 20:44:42,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 20:44:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 20:44:42,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-07 20:44:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 20:44:42,855 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 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) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (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{~counter~0=v_~counter~0_3, #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[~counter~0, #NULL.offset, #NULL.base] {25#true} is VALID [2022-04-07 20:44:42,855 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 20:44:42,855 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 20:44:42,857 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-07 20:44:42,857 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 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) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (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{~counter~0=v_~counter~0_3, #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[~counter~0, #NULL.offset, #NULL.base] {25#true} is VALID [2022-04-07 20:44:42,857 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 20:44:42,858 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 20:44:42,858 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {25#true} is VALID [2022-04-07 20:44:42,858 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {25#true} is VALID [2022-04-07 20:44:42,858 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} [63] L27-3-->L27-4: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-07 20:44:42,859 INFO L272 TraceCheckUtils]: 7: Hoare triple {26#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 1) (* (* (* v_main_~y~0_9 2) v_main_~y~0_9) v_main_~y~0_9)) (* (- 1) v_main_~y~0_9) (* v_main_~x~0_9 6) (* (- 1) (* v_main_~y~0_9 (* v_main_~y~0_9 3)))) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {26#false} is VALID [2022-04-07 20:44:42,859 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} [69] __VERIFIER_assertENTRY-->L10: 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 [2022-04-07 20:44:42,859 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} [72] L10-->L11: 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 [2022-04-07 20:44:42,859 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#false} is VALID [2022-04-07 20:44:42,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 20:44:42,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 20:44:42,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309345273] [2022-04-07 20:44:42,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309345273] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 20:44:42,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 20:44:42,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-07 20:44:42,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314334201] [2022-04-07 20:44:42,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 20:44:42,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-07 20:44:42,866 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 20:44:42,868 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:42,879 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 20:44:42,879 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-07 20:44:42,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 20:44:42,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-07 20:44:42,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 20:44:42,893 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:42,945 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-07 20:44:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-07 20:44:42,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-07 20:44:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 20:44:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-04-07 20:44:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:42,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-04-07 20:44:42,952 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 28 transitions. [2022-04-07 20:44:42,976 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 20:44:42,981 INFO L225 Difference]: With dead ends: 23 [2022-04-07 20:44:42,981 INFO L226 Difference]: Without dead ends: 18 [2022-04-07 20:44:42,982 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-07 20:44:42,984 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 20:44:42,984 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 20:44:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-07 20:44:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-04-07 20:44:43,001 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 20:44:43,002 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:43,002 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:43,003 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:43,005 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-07 20:44:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-07 20:44:43,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:44:43,005 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 20:44:43,005 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-07 20:44:43,006 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 18 states. [2022-04-07 20:44:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:43,007 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-07 20:44:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-07 20:44:43,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:44:43,008 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 20:44:43,008 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 20:44:43,008 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 20:44:43,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-07 20:44:43,010 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-07 20:44:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 20:44:43,010 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-07 20:44:43,010 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-07 20:44:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-07 20:44:43,011 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 20:44:43,011 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 20:44:43,011 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-07 20:44:43,012 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 20:44:43,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 20:44:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2022-04-07 20:44:43,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 20:44:43,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819233991] [2022-04-07 20:44:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 20:44:43,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 20:44:43,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 20:44:43,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174693602] [2022-04-07 20:44:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 20:44:43,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 20:44:43,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 20:44:43,028 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) [2022-04-07 20:44:43,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-07 20:44:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 20:44:43,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-07 20:44:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 20:44:43,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 20:44:43,197 INFO L272 TraceCheckUtils]: 0: Hoare triple {109#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {109#true} is VALID [2022-04-07 20:44:43,198 INFO L290 TraceCheckUtils]: 1: Hoare triple {109#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 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) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (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{~counter~0=v_~counter~0_3, #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[~counter~0, #NULL.offset, #NULL.base] {117#(<= ~counter~0 0)} is VALID [2022-04-07 20:44:43,199 INFO L290 TraceCheckUtils]: 2: Hoare triple {117#(<= ~counter~0 0)} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-07 20:44:43,199 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {117#(<= ~counter~0 0)} {109#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-07 20:44:43,207 INFO L272 TraceCheckUtils]: 4: Hoare triple {117#(<= ~counter~0 0)} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {117#(<= ~counter~0 0)} is VALID [2022-04-07 20:44:43,208 INFO L290 TraceCheckUtils]: 5: Hoare triple {117#(<= ~counter~0 0)} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {117#(<= ~counter~0 0)} is VALID [2022-04-07 20:44:43,209 INFO L290 TraceCheckUtils]: 6: Hoare triple {117#(<= ~counter~0 0)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {133#(<= |main_#t~post5| 0)} is VALID [2022-04-07 20:44:43,209 INFO L290 TraceCheckUtils]: 7: Hoare triple {133#(<= |main_#t~post5| 0)} [66] L27-1-->L27-4: Formula: (not (< |v_main_#t~post5_2| 20)) InVars {main_#t~post5=|v_main_#t~post5_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {110#false} is VALID [2022-04-07 20:44:43,209 INFO L272 TraceCheckUtils]: 8: Hoare triple {110#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 1) (* (* (* v_main_~y~0_9 2) v_main_~y~0_9) v_main_~y~0_9)) (* (- 1) v_main_~y~0_9) (* v_main_~x~0_9 6) (* (- 1) (* v_main_~y~0_9 (* v_main_~y~0_9 3)))) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {110#false} is VALID [2022-04-07 20:44:43,210 INFO L290 TraceCheckUtils]: 9: Hoare triple {110#false} [69] __VERIFIER_assertENTRY-->L10: 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] {110#false} is VALID [2022-04-07 20:44:43,210 INFO L290 TraceCheckUtils]: 10: Hoare triple {110#false} [72] L10-->L11: 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[] {110#false} is VALID [2022-04-07 20:44:43,210 INFO L290 TraceCheckUtils]: 11: Hoare triple {110#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {110#false} is VALID [2022-04-07 20:44:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 20:44:43,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 20:44:43,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 20:44:43,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819233991] [2022-04-07 20:44:43,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 20:44:43,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174693602] [2022-04-07 20:44:43,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174693602] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 20:44:43,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 20:44:43,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-07 20:44:43,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930875] [2022-04-07 20:44:43,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 20:44:43,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 20:44:43,213 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 20:44:43,213 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,228 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 20:44:43,228 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-07 20:44:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 20:44:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-07 20:44:43,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 20:44:43,229 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:43,267 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-07 20:44:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-07 20:44:43,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 20:44:43,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 20:44:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-04-07 20:44:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-04-07 20:44:43,277 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 22 transitions. [2022-04-07 20:44:43,295 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 20:44:43,296 INFO L225 Difference]: With dead ends: 19 [2022-04-07 20:44:43,296 INFO L226 Difference]: Without dead ends: 19 [2022-04-07 20:44:43,296 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-07 20:44:43,298 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 20:44:43,298 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 20:44:43,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-07 20:44:43,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-07 20:44:43,300 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 20:44:43,300 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:43,301 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:43,301 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:43,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:43,302 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-07 20:44:43,302 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-07 20:44:43,302 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:44:43,302 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 20:44:43,303 INFO L74 IsIncluded]: Start isIncluded. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-07 20:44:43,303 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-07 20:44:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:43,304 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-07 20:44:43,304 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-07 20:44:43,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:44:43,304 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 20:44:43,304 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 20:44:43,304 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 20:44:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-07 20:44:43,306 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-07 20:44:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 20:44:43,306 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-07 20:44:43,306 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,306 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-07 20:44:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-07 20:44:43,307 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 20:44:43,307 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 20:44:43,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-07 20:44:43,507 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 [2022-04-07 20:44:43,507 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 20:44:43,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 20:44:43,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2022-04-07 20:44:43,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 20:44:43,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631813530] [2022-04-07 20:44:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 20:44:43,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 20:44:43,519 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 20:44:43,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120359973] [2022-04-07 20:44:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 20:44:43,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 20:44:43,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 20:44:43,522 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) [2022-04-07 20:44:43,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-07 20:44:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 20:44:43,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-07 20:44:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 20:44:43,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 20:44:43,674 INFO L272 TraceCheckUtils]: 0: Hoare triple {224#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-07 20:44:43,674 INFO L290 TraceCheckUtils]: 1: Hoare triple {224#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 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) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (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{~counter~0=v_~counter~0_3, #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[~counter~0, #NULL.offset, #NULL.base] {224#true} is VALID [2022-04-07 20:44:43,674 INFO L290 TraceCheckUtils]: 2: Hoare triple {224#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-07 20:44:43,674 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {224#true} {224#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-07 20:44:43,675 INFO L272 TraceCheckUtils]: 4: Hoare triple {224#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {224#true} is VALID [2022-04-07 20:44:43,675 INFO L290 TraceCheckUtils]: 5: Hoare triple {224#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {244#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-07 20:44:43,676 INFO L290 TraceCheckUtils]: 6: Hoare triple {244#(and (= main_~x~0 0) (= main_~y~0 0))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {244#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-07 20:44:43,676 INFO L290 TraceCheckUtils]: 7: Hoare triple {244#(and (= main_~x~0 0) (= main_~y~0 0))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {244#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-07 20:44:43,677 INFO L272 TraceCheckUtils]: 8: Hoare triple {244#(and (= main_~x~0 0) (= main_~y~0 0))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {254#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-07 20:44:43,678 INFO L290 TraceCheckUtils]: 9: Hoare triple {254#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L10: 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] {258#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-07 20:44:43,678 INFO L290 TraceCheckUtils]: 10: Hoare triple {258#(<= 1 __VERIFIER_assert_~cond)} [72] L10-->L11: 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[] {225#false} is VALID [2022-04-07 20:44:43,678 INFO L290 TraceCheckUtils]: 11: Hoare triple {225#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {225#false} is VALID [2022-04-07 20:44:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 20:44:43,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-07 20:44:43,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 20:44:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631813530] [2022-04-07 20:44:43,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 20:44:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120359973] [2022-04-07 20:44:43,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120359973] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-07 20:44:43,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-07 20:44:43,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-07 20:44:43,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230609850] [2022-04-07 20:44:43,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 20:44:43,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 20:44:43,680 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 20:44:43,680 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,688 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 20:44:43,689 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 20:44:43,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 20:44:43,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 20:44:43,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-07 20:44:43,689 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:43,766 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-07 20:44:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 20:44:43,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-07 20:44:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 20:44:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-07 20:44:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-07 20:44:43,769 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 30 transitions. [2022-04-07 20:44:43,795 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 20:44:43,796 INFO L225 Difference]: With dead ends: 26 [2022-04-07 20:44:43,796 INFO L226 Difference]: Without dead ends: 25 [2022-04-07 20:44:43,797 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-07 20:44:43,797 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 20:44:43,798 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 20:44:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-07 20:44:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-07 20:44:43,800 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 20:44:43,800 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 20:44:43,800 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 20:44:43,800 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 20:44:43,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:43,802 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-07 20:44:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-07 20:44:43,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:44:43,802 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 20:44:43,802 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-07 20:44:43,803 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-07 20:44:43,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:43,804 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-07 20:44:43,804 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-07 20:44:43,804 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:44:43,804 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 20:44:43,804 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 20:44:43,804 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 20:44:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-07 20:44:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-07 20:44:43,806 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-04-07 20:44:43,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 20:44:43,806 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-07 20:44:43,806 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-07 20:44:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-07 20:44:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-07 20:44:43,806 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 20:44:43,806 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 20:44:43,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-07 20:44:44,011 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 [2022-04-07 20:44:44,011 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 20:44:44,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 20:44:44,012 INFO L85 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2022-04-07 20:44:44,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 20:44:44,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633156109] [2022-04-07 20:44:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 20:44:44,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 20:44:44,025 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 20:44:44,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464676673] [2022-04-07 20:44:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 20:44:44,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 20:44:44,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 20:44:44,026 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) [2022-04-07 20:44:44,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-07 20:44:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 20:44:44,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-07 20:44:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 20:44:44,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 20:44:44,212 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 20:44:44,213 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 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) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (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{~counter~0=v_~counter~0_3, #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[~counter~0, #NULL.offset, #NULL.base] {375#(<= ~counter~0 0)} is VALID [2022-04-07 20:44:44,214 INFO L290 TraceCheckUtils]: 2: Hoare triple {375#(<= ~counter~0 0)} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {375#(<= ~counter~0 0)} is VALID [2022-04-07 20:44:44,214 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {375#(<= ~counter~0 0)} {367#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {375#(<= ~counter~0 0)} is VALID [2022-04-07 20:44:44,215 INFO L272 TraceCheckUtils]: 4: Hoare triple {375#(<= ~counter~0 0)} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {375#(<= ~counter~0 0)} is VALID [2022-04-07 20:44:44,215 INFO L290 TraceCheckUtils]: 5: Hoare triple {375#(<= ~counter~0 0)} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {375#(<= ~counter~0 0)} is VALID [2022-04-07 20:44:44,216 INFO L290 TraceCheckUtils]: 6: Hoare triple {375#(<= ~counter~0 0)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {391#(<= ~counter~0 1)} is VALID [2022-04-07 20:44:44,216 INFO L290 TraceCheckUtils]: 7: Hoare triple {391#(<= ~counter~0 1)} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {391#(<= ~counter~0 1)} is VALID [2022-04-07 20:44:44,219 INFO L272 TraceCheckUtils]: 8: Hoare triple {391#(<= ~counter~0 1)} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {391#(<= ~counter~0 1)} is VALID [2022-04-07 20:44:44,220 INFO L290 TraceCheckUtils]: 9: Hoare triple {391#(<= ~counter~0 1)} [69] __VERIFIER_assertENTRY-->L10: 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] {391#(<= ~counter~0 1)} is VALID [2022-04-07 20:44:44,220 INFO L290 TraceCheckUtils]: 10: Hoare triple {391#(<= ~counter~0 1)} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {391#(<= ~counter~0 1)} is VALID [2022-04-07 20:44:44,224 INFO L290 TraceCheckUtils]: 11: Hoare triple {391#(<= ~counter~0 1)} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {391#(<= ~counter~0 1)} is VALID [2022-04-07 20:44:44,224 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {391#(<= ~counter~0 1)} {391#(<= ~counter~0 1)} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {391#(<= ~counter~0 1)} is VALID [2022-04-07 20:44:44,225 INFO L290 TraceCheckUtils]: 13: Hoare triple {391#(<= ~counter~0 1)} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (= v_main_~x~0_5 (+ v_main_~x~0_6 (* v_main_~y~0_5 v_main_~y~0_5))) (< v_main_~c~0_6 v_main_~k~0_5) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {391#(<= ~counter~0 1)} is VALID [2022-04-07 20:44:44,225 INFO L290 TraceCheckUtils]: 14: Hoare triple {391#(<= ~counter~0 1)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {416#(<= |main_#t~post5| 1)} is VALID [2022-04-07 20:44:44,226 INFO L290 TraceCheckUtils]: 15: Hoare triple {416#(<= |main_#t~post5| 1)} [66] L27-1-->L27-4: Formula: (not (< |v_main_#t~post5_2| 20)) InVars {main_#t~post5=|v_main_#t~post5_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {368#false} is VALID [2022-04-07 20:44:44,226 INFO L272 TraceCheckUtils]: 16: Hoare triple {368#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 1) (* (* (* v_main_~y~0_9 2) v_main_~y~0_9) v_main_~y~0_9)) (* (- 1) v_main_~y~0_9) (* v_main_~x~0_9 6) (* (- 1) (* v_main_~y~0_9 (* v_main_~y~0_9 3)))) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {368#false} is VALID [2022-04-07 20:44:44,228 INFO L290 TraceCheckUtils]: 17: Hoare triple {368#false} [69] __VERIFIER_assertENTRY-->L10: 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] {368#false} is VALID [2022-04-07 20:44:44,228 INFO L290 TraceCheckUtils]: 18: Hoare triple {368#false} [72] L10-->L11: 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[] {368#false} is VALID [2022-04-07 20:44:44,228 INFO L290 TraceCheckUtils]: 19: Hoare triple {368#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-07 20:44:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 20:44:44,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-07 20:44:44,368 INFO L290 TraceCheckUtils]: 19: Hoare triple {368#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {368#false} is VALID [2022-04-07 20:44:44,368 INFO L290 TraceCheckUtils]: 18: Hoare triple {368#false} [72] L10-->L11: 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[] {368#false} is VALID [2022-04-07 20:44:44,368 INFO L290 TraceCheckUtils]: 17: Hoare triple {368#false} [69] __VERIFIER_assertENTRY-->L10: 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] {368#false} is VALID [2022-04-07 20:44:44,369 INFO L272 TraceCheckUtils]: 16: Hoare triple {368#false} [65] L27-4-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ (* (- 1) (* (* (* v_main_~y~0_9 2) v_main_~y~0_9) v_main_~y~0_9)) (* (- 1) v_main_~y~0_9) (* v_main_~x~0_9 6) (* (- 1) (* v_main_~y~0_9 (* v_main_~y~0_9 3)))) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_9, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {368#false} is VALID [2022-04-07 20:44:44,369 INFO L290 TraceCheckUtils]: 15: Hoare triple {444#(< |main_#t~post5| 20)} [66] L27-1-->L27-4: Formula: (not (< |v_main_#t~post5_2| 20)) InVars {main_#t~post5=|v_main_#t~post5_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {368#false} is VALID [2022-04-07 20:44:44,369 INFO L290 TraceCheckUtils]: 14: Hoare triple {448#(< ~counter~0 20)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {444#(< |main_#t~post5| 20)} is VALID [2022-04-07 20:44:44,370 INFO L290 TraceCheckUtils]: 13: Hoare triple {448#(< ~counter~0 20)} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (= v_main_~x~0_5 (+ v_main_~x~0_6 (* v_main_~y~0_5 v_main_~y~0_5))) (< v_main_~c~0_6 v_main_~k~0_5) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {448#(< ~counter~0 20)} is VALID [2022-04-07 20:44:44,371 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {367#true} {448#(< ~counter~0 20)} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {448#(< ~counter~0 20)} is VALID [2022-04-07 20:44:44,371 INFO L290 TraceCheckUtils]: 11: Hoare triple {367#true} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 20:44:44,371 INFO L290 TraceCheckUtils]: 10: Hoare triple {367#true} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 20:44:44,371 INFO L290 TraceCheckUtils]: 9: Hoare triple {367#true} [69] __VERIFIER_assertENTRY-->L10: 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] {367#true} is VALID [2022-04-07 20:44:44,372 INFO L272 TraceCheckUtils]: 8: Hoare triple {448#(< ~counter~0 20)} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {367#true} is VALID [2022-04-07 20:44:44,372 INFO L290 TraceCheckUtils]: 7: Hoare triple {448#(< ~counter~0 20)} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {448#(< ~counter~0 20)} is VALID [2022-04-07 20:44:44,373 INFO L290 TraceCheckUtils]: 6: Hoare triple {473#(< ~counter~0 19)} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {448#(< ~counter~0 20)} is VALID [2022-04-07 20:44:44,373 INFO L290 TraceCheckUtils]: 5: Hoare triple {473#(< ~counter~0 19)} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {473#(< ~counter~0 19)} is VALID [2022-04-07 20:44:44,374 INFO L272 TraceCheckUtils]: 4: Hoare triple {473#(< ~counter~0 19)} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {473#(< ~counter~0 19)} is VALID [2022-04-07 20:44:44,374 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {473#(< ~counter~0 19)} {367#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {473#(< ~counter~0 19)} is VALID [2022-04-07 20:44:44,375 INFO L290 TraceCheckUtils]: 2: Hoare triple {473#(< ~counter~0 19)} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {473#(< ~counter~0 19)} is VALID [2022-04-07 20:44:44,378 INFO L290 TraceCheckUtils]: 1: Hoare triple {367#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 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) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (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{~counter~0=v_~counter~0_3, #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[~counter~0, #NULL.offset, #NULL.base] {473#(< ~counter~0 19)} is VALID [2022-04-07 20:44:44,379 INFO L272 TraceCheckUtils]: 0: Hoare triple {367#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {367#true} is VALID [2022-04-07 20:44:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 20:44:44,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 20:44:44,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633156109] [2022-04-07 20:44:44,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 20:44:44,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464676673] [2022-04-07 20:44:44,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464676673] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-07 20:44:44,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-07 20:44:44,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-07 20:44:44,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18911069] [2022-04-07 20:44:44,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-07 20:44:44,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-04-07 20:44:44,386 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 20:44:44,387 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-07 20:44:44,412 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 20:44:44,412 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-07 20:44:44,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 20:44:44,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-07 20:44:44,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-07 20:44:44,414 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-07 20:44:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:44,528 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-07 20:44:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-07 20:44:44,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-04-07 20:44:44,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 20:44:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-07 20:44:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 56 transitions. [2022-04-07 20:44:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-07 20:44:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 56 transitions. [2022-04-07 20:44:44,534 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 10 states and 56 transitions. [2022-04-07 20:44:44,573 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 56 edges. 56 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-07 20:44:44,575 INFO L225 Difference]: With dead ends: 49 [2022-04-07 20:44:44,575 INFO L226 Difference]: Without dead ends: 49 [2022-04-07 20:44:44,575 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-07 20:44:44,584 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 20:44:44,585 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 72 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 20:44:44,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-07 20:44:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2022-04-07 20:44:44,594 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 20:44:44,595 INFO L82 GeneralOperation]: Start isEquivalent. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-07 20:44:44,596 INFO L74 IsIncluded]: Start isIncluded. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-07 20:44:44,596 INFO L87 Difference]: Start difference. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-07 20:44:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:44,603 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-07 20:44:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-04-07 20:44:44,603 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:44:44,603 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 20:44:44,603 INFO L74 IsIncluded]: Start isIncluded. First operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 49 states. [2022-04-07 20:44:44,604 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 49 states. [2022-04-07 20:44:44,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:44,606 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-07 20:44:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-04-07 20:44:44,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:44:44,606 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 20:44:44,606 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 20:44:44,606 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 20:44:44,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-07 20:44:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-04-07 20:44:44,608 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2022-04-07 20:44:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 20:44:44,609 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-04-07 20:44:44,609 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-07 20:44:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-04-07 20:44:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-07 20:44:44,612 INFO L491 BasicCegarLoop]: Found error trace [2022-04-07 20:44:44,612 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-07 20:44:44,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-07 20:44:44,812 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 20:44:44,813 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-07 20:44:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-07 20:44:44,813 INFO L85 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times [2022-04-07 20:44:44,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-07 20:44:44,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694146917] [2022-04-07 20:44:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 20:44:44,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-07 20:44:44,824 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-07 20:44:44,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741340622] [2022-04-07 20:44:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-07 20:44:44,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 20:44:44,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-07 20:44:44,825 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-07 20:44:44,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-07 20:44:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 20:44:44,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-07 20:44:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-07 20:44:44,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-07 20:44:44,965 INFO L272 TraceCheckUtils]: 0: Hoare triple {692#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:44,965 INFO L290 TraceCheckUtils]: 1: Hoare triple {692#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 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) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (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{~counter~0=v_~counter~0_3, #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[~counter~0, #NULL.offset, #NULL.base] {692#true} is VALID [2022-04-07 20:44:44,966 INFO L290 TraceCheckUtils]: 2: Hoare triple {692#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:44,966 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {692#true} {692#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:44,966 INFO L272 TraceCheckUtils]: 4: Hoare triple {692#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:44,966 INFO L290 TraceCheckUtils]: 5: Hoare triple {692#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-07 20:44:44,967 INFO L290 TraceCheckUtils]: 6: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-07 20:44:44,967 INFO L290 TraceCheckUtils]: 7: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-07 20:44:44,968 INFO L272 TraceCheckUtils]: 8: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {692#true} is VALID [2022-04-07 20:44:44,968 INFO L290 TraceCheckUtils]: 9: Hoare triple {692#true} [69] __VERIFIER_assertENTRY-->L10: 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] {692#true} is VALID [2022-04-07 20:44:44,968 INFO L290 TraceCheckUtils]: 10: Hoare triple {692#true} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:44,968 INFO L290 TraceCheckUtils]: 11: Hoare triple {692#true} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:44,968 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {692#true} {712#(and (= main_~x~0 0) (= main_~y~0 0))} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {712#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-07 20:44:44,969 INFO L290 TraceCheckUtils]: 13: Hoare triple {712#(and (= main_~x~0 0) (= main_~y~0 0))} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (= v_main_~x~0_5 (+ v_main_~x~0_6 (* v_main_~y~0_5 v_main_~y~0_5))) (< v_main_~c~0_6 v_main_~k~0_5) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} is VALID [2022-04-07 20:44:44,969 INFO L290 TraceCheckUtils]: 14: Hoare triple {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} is VALID [2022-04-07 20:44:44,972 INFO L290 TraceCheckUtils]: 15: Hoare triple {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} is VALID [2022-04-07 20:44:44,973 INFO L272 TraceCheckUtils]: 16: Hoare triple {737#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {747#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-07 20:44:44,973 INFO L290 TraceCheckUtils]: 17: Hoare triple {747#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L10: 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] {751#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-07 20:44:44,974 INFO L290 TraceCheckUtils]: 18: Hoare triple {751#(<= 1 __VERIFIER_assert_~cond)} [72] L10-->L11: 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[] {693#false} is VALID [2022-04-07 20:44:44,974 INFO L290 TraceCheckUtils]: 19: Hoare triple {693#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#false} is VALID [2022-04-07 20:44:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-07 20:44:44,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-07 20:44:45,083 INFO L290 TraceCheckUtils]: 19: Hoare triple {693#false} [76] L11-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {693#false} is VALID [2022-04-07 20:44:45,084 INFO L290 TraceCheckUtils]: 18: Hoare triple {751#(<= 1 __VERIFIER_assert_~cond)} [72] L10-->L11: 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[] {693#false} is VALID [2022-04-07 20:44:45,084 INFO L290 TraceCheckUtils]: 17: Hoare triple {747#(<= 1 |__VERIFIER_assert_#in~cond|)} [69] __VERIFIER_assertENTRY-->L10: 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] {751#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-07 20:44:45,085 INFO L272 TraceCheckUtils]: 16: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {747#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-07 20:44:45,085 INFO L290 TraceCheckUtils]: 15: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-07 20:44:45,087 INFO L290 TraceCheckUtils]: 14: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-07 20:44:56,051 WARN L290 TraceCheckUtils]: 13: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [75] L28-1-->L27-3: Formula: (and (= v_main_~y~0_5 (+ v_main_~y~0_6 1)) (= v_main_~x~0_5 (+ v_main_~x~0_6 (* v_main_~y~0_5 v_main_~y~0_5))) (< v_main_~c~0_6 v_main_~k~0_5) (= (+ v_main_~c~0_6 1) v_main_~c~0_5)) InVars {main_~y~0=v_main_~y~0_6, main_~c~0=v_main_~c~0_6, main_~x~0=v_main_~x~0_6, main_~k~0=v_main_~k~0_5} OutVars{main_~y~0=v_main_~y~0_5, main_~c~0=v_main_~c~0_5, main_~x~0=v_main_~x~0_5, main_~k~0=v_main_~k~0_5} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_~c~0] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is UNKNOWN [2022-04-07 20:44:56,051 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {692#true} {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [81] __VERIFIER_assertEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-07 20:44:56,052 INFO L290 TraceCheckUtils]: 11: Hoare triple {692#true} [78] L10-2-->__VERIFIER_assertEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:56,052 INFO L290 TraceCheckUtils]: 10: Hoare triple {692#true} [73] L10-->L10-2: Formula: (not (= v___VERIFIER_assert_~cond_3 0)) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_3} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:56,052 INFO L290 TraceCheckUtils]: 9: Hoare triple {692#true} [69] __VERIFIER_assertENTRY-->L10: 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] {692#true} is VALID [2022-04-07 20:44:56,052 INFO L272 TraceCheckUtils]: 8: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [70] L28-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) (* v_main_~y~0_8 (* (* v_main_~y~0_8 2) v_main_~y~0_8))) (* (- 1) (* v_main_~y~0_8 (* v_main_~y~0_8 3))) (* v_main_~x~0_8 6)) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_8, main_~y~0=v_main_~y~0_8} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {692#true} is VALID [2022-04-07 20:44:56,060 INFO L290 TraceCheckUtils]: 7: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [67] L27-1-->L28: Formula: (< |v_main_#t~post5_4| 20) InVars {main_#t~post5=|v_main_#t~post5_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post5] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-07 20:44:56,061 INFO L290 TraceCheckUtils]: 6: Hoare triple {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} [64] L27-3-->L27-1: Formula: (and (= v_~counter~0_1 (+ |v_main_#t~post5_5| 1)) (= |v_main_#t~post5_5| v_~counter~0_2)) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post5=|v_main_#t~post5_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post5] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-07 20:44:56,061 INFO L290 TraceCheckUtils]: 5: Hoare triple {692#true} [61] mainENTRY-->L27-3: Formula: (and (= v_main_~c~0_2 0) (<= |v_main_#t~nondet4_2| 32767) (<= 0 (+ |v_main_#t~nondet4_2| 32768)) (= v_main_~k~0_2 |v_main_#t~nondet4_2|) (= v_main_~x~0_2 0) (= v_main_~y~0_2 0)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~k~0, main_~c~0, main_~y~0] {767#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-07 20:44:56,061 INFO L272 TraceCheckUtils]: 4: Hoare triple {692#true} [58] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:56,062 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {692#true} {692#true} [79] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:56,062 INFO L290 TraceCheckUtils]: 2: Hoare triple {692#true} [62] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:56,062 INFO L290 TraceCheckUtils]: 1: Hoare triple {692#true} [59] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 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) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (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{~counter~0=v_~counter~0_3, #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[~counter~0, #NULL.offset, #NULL.base] {692#true} is VALID [2022-04-07 20:44:56,062 INFO L272 TraceCheckUtils]: 0: Hoare triple {692#true} [57] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {692#true} is VALID [2022-04-07 20:44:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-07 20:44:56,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-07 20:44:56,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694146917] [2022-04-07 20:44:56,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-07 20:44:56,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741340622] [2022-04-07 20:44:56,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741340622] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-07 20:44:56,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-07 20:44:56,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-07 20:44:56,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665297069] [2022-04-07 20:44:56,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-07 20:44:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-07 20:44:56,064 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-07 20:44:56,064 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:58,097 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 17 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-07 20:44:58,097 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-07 20:44:58,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-07 20:44:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-07 20:44:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-07 20:44:58,098 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:44:58,152 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-04-07 20:44:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-07 20:44:58,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-07 20:44:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-07 20:44:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-04-07 20:44:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:44:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-04-07 20:44:58,154 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 18 transitions. [2022-04-07 20:45:00,168 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 17 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-07 20:45:00,168 INFO L225 Difference]: With dead ends: 43 [2022-04-07 20:45:00,168 INFO L226 Difference]: Without dead ends: 0 [2022-04-07 20:45:00,168 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-07 20:45:00,169 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-07 20:45:00,169 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-07 20:45:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-07 20:45:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-07 20:45:00,170 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-07 20:45:00,170 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) [2022-04-07 20:45:00,170 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) [2022-04-07 20:45:00,170 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) [2022-04-07 20:45:00,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:45:00,170 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-07 20:45:00,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 20:45:00,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:45:00,170 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 20:45:00,170 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. [2022-04-07 20:45:00,170 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. [2022-04-07 20:45:00,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-07 20:45:00,171 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-07 20:45:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 20:45:00,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:45:00,171 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-07 20:45:00,171 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-07 20:45:00,171 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-07 20:45:00,171 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) [2022-04-07 20:45:00,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-07 20:45:00,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-04-07 20:45:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-07 20:45:00,171 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-07 20:45:00,171 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-07 20:45:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-07 20:45:00,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-07 20:45:00,173 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-07 20:45:00,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-07 20:45:00,374 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-07 20:45:00,376 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-07 20:45:00,377 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-07 20:45:00,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.04 08:45:00 BasicIcfg [2022-04-07 20:45:00,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-07 20:45:00,379 INFO L158 Benchmark]: Toolchain (without parser) took 18253.06ms. Allocated memory was 211.8MB in the beginning and 278.9MB in the end (delta: 67.1MB). Free memory was 155.4MB in the beginning and 213.7MB in the end (delta: -58.3MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. [2022-04-07 20:45:00,379 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 171.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-07 20:45:00,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.28ms. Allocated memory was 211.8MB in the beginning and 278.9MB in the end (delta: 67.1MB). Free memory was 155.3MB in the beginning and 247.7MB in the end (delta: -92.4MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. [2022-04-07 20:45:00,380 INFO L158 Benchmark]: Boogie Preprocessor took 33.22ms. Allocated memory is still 278.9MB. Free memory was 247.7MB in the beginning and 246.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-07 20:45:00,380 INFO L158 Benchmark]: RCFGBuilder took 243.51ms. Allocated memory is still 278.9MB. Free memory was 246.2MB in the beginning and 234.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-07 20:45:00,380 INFO L158 Benchmark]: IcfgTransformer took 29.46ms. Allocated memory is still 278.9MB. Free memory was 234.2MB in the beginning and 232.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-07 20:45:00,380 INFO L158 Benchmark]: TraceAbstraction took 17721.59ms. Allocated memory is still 278.9MB. Free memory was 232.1MB in the beginning and 213.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.1MB. Max. memory is 8.0GB. [2022-04-07 20:45:00,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 171.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.28ms. Allocated memory was 211.8MB in the beginning and 278.9MB in the end (delta: 67.1MB). Free memory was 155.3MB in the beginning and 247.7MB in the end (delta: -92.4MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.22ms. Allocated memory is still 278.9MB. Free memory was 247.7MB in the beginning and 246.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 243.51ms. Allocated memory is still 278.9MB. Free memory was 246.2MB in the beginning and 234.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 29.46ms. Allocated memory is still 278.9MB. Free memory was 234.2MB in the beginning and 232.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 17721.59ms. Allocated memory is still 278.9MB. Free memory was 232.1MB in the beginning and 213.7MB in the end (delta: 18.4MB). Peak memory consumption was 18.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: 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: 17.7s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 151 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 89 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 SizeOfPredicates, 5 NumberOfNonLiveVariables, 326 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 11/18 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! [2022-04-07 20:45:00,392 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...